diff --git a/app/Http/Controllers/Business/FinanceLedger.php b/app/Http/Controllers/Business/FinanceLedger.php
index 95802fdb..bdd38e32 100644
--- a/app/Http/Controllers/Business/FinanceLedger.php
+++ b/app/Http/Controllers/Business/FinanceLedger.php
@@ -673,6 +673,145 @@ class FinanceLedger extends Controller
         ], $inserted ? 201 : 200, ['Cache-Control' => 'private, no-store']);
     }
 
+    public function updateTransactionAccount(Request $request, int $id, FinanceLedgerCalculator $calculator): JsonResponse
+    {
+        abort_unless(FinanceLedgerAccess::canEditMapping(user()), 403, '只有财务台账管理员可以修改动账账户关联。');
+
+        $data = $request->validate([
+            'account_short' => ['required', 'string', 'max:100'],
+        ]);
+
+        $accountShort = trim((string) $data['account_short']);
+        $connection = DB::connection((string) config('upstream_mirrors.connection', 'business_mirror'));
+        $account = $connection->table('fin_accounts')
+            ->where('account_short', $accountShort)
+            ->orderBy('id')
+            ->first(['account_short', 'company_name']);
+        abort_if($account === null, 422, '账户简称不存在，请从账户总表中选择。');
+
+        $result = $connection->transaction(function () use (
+            $connection,
+            $calculator,
+            $id,
+            $accountShort,
+        ): array {
+            $transaction = $connection->table('fin_transactions')
+                ->where('id', $id)
+                ->lockForUpdate()
+                ->first();
+            abort_if($transaction === null, 404);
+
+            $source = trim((string) $transaction->source);
+            $sourceValue = trim((string) ($transaction->source_value ?? ''));
+            $directTransaction = $source === FinanceLedgerTransactionWriter::MANUAL_SOURCE || $sourceValue === '';
+            $groupKey = $directTransaction
+                ? 'transaction:' . $id
+                : hash('sha256', $source . '|' . $sourceValue);
+            $mapping = null;
+            $old = trim((string) ($transaction->account_short ?? ''));
+
+            if (! $directTransaction) {
+                $mapping = $connection->table('fin_account_map')
+                    ->where('source', $source)
+                    ->where('source_value', $sourceValue)
+                    ->lockForUpdate()
+                    ->first();
+                $mappedAccount = trim((string) ($mapping->account_short ?? ''));
+                if ($mappedAccount !== '') {
+                    $old = $mappedAccount;
+                }
+            }
+
+            if ($old === $accountShort) {
+                return [
+                    'changed' => false,
+                    'scope' => $directTransaction ? 'transaction' : 'mapping',
+                    'group_key' => $groupKey,
+                    'txn_date' => (string) $transaction->txn_date,
+                ];
+            }
+
+            $now = now();
+            if ($directTransaction) {
+                $connection->table('fin_transactions')->where('id', $id)->update([
+                    'account_short' => $accountShort,
+                    'updated_by' => (string) user()->name,
+                    'updated_at' => $now,
+                ]);
+            } else {
+                if ($mapping === null) {
+                    $stats = $connection->table('fin_transactions')
+                        ->where('source', $source)
+                        ->where('source_value', $sourceValue)
+                        ->selectRaw('COUNT(*) AS txn_count, SUM(income) AS income_sum, SUM(expense) AS expense_sum')
+                        ->first();
+                    $connection->table('fin_account_map')->insert([
+                        'source' => $source,
+                        'source_value' => $sourceValue,
+                        'account_short' => $accountShort,
+                        'txn_count' => (int) ($stats->txn_count ?? 0),
+                        'income_sum' => round((float) ($stats->income_sum ?? 0), 2),
+                        'expense_sum' => round((float) ($stats->expense_sum ?? 0), 2),
+                        'updated_by' => (string) user()->name,
+                        'created_at' => $now,
+                        'updated_at' => $now,
+                    ]);
+                } else {
+                    $connection->table('fin_account_map')->where('id', $mapping->id)->update([
+                        'account_short' => $accountShort,
+                        'updated_by' => (string) user()->name,
+                        'updated_at' => $now,
+                    ]);
+                }
+
+                $connection->table('fin_account_map_events')->insert([
+                    'source' => $source,
+                    'source_value' => $sourceValue,
+                    'old_account_short' => $old !== '' ? $old : null,
+                    'new_account_short' => $accountShort,
+                    'user_id' => (int) user()->id,
+                    'user_name' => (string) user()->name,
+                    'created_at' => $now,
+                ]);
+            }
+
+            $calculator->recalculate();
+
+            return [
+                'changed' => true,
+                'scope' => $directTransaction ? 'transaction' : 'mapping',
+                'group_key' => $groupKey,
+                'txn_date' => (string) $transaction->txn_date,
+            ];
+        });
+
+        $flow = $connection->table('fin_daily_flows')
+            ->where('account_short', $accountShort)
+            ->whereDate('flow_date', (string) $result['txn_date'])
+            ->first(['flow_date', 'opening_balance', 'inflow', 'outflow', 'closing_balance']);
+        $currentBalance = $connection->table('fin_accounts')
+            ->where('account_short', $accountShort)
+            ->orderBy('id')
+            ->value('current_balance');
+
+        return response()->json([
+            'ok' => true,
+            'changed' => (bool) $result['changed'],
+            'scope' => (string) $result['scope'],
+            'group_key' => (string) $result['group_key'],
+            'account_short' => $accountShort,
+            'company_name' => (string) ($account->company_name ?? ''),
+            'current_balance' => round((float) ($currentBalance ?? 0), 2),
+            'daily_flow' => $flow === null ? null : [
+                'flow_date' => (string) $flow->flow_date,
+                'opening_balance' => round((float) $flow->opening_balance, 2),
+                'inflow' => round((float) $flow->inflow, 2),
+                'outflow' => round((float) $flow->outflow, 2),
+                'closing_balance' => round((float) $flow->closing_balance, 2),
+            ],
+        ], 200, ['Cache-Control' => 'private, no-store']);
+    }
+
     public function updateAccountStatus(Request $request, FinanceLedgerCalculator $calculator): JsonResponse
     {
         abort_unless(FinanceLedgerAccess::canEditAccountStatus(user()), 403, '只有财务台账管理员可以修改账户状态。');
diff --git a/resources/views/business/pages/financial-ledger/ledger.blade.php b/resources/views/business/pages/financial-ledger/ledger.blade.php
index 544ebcd2..f02e2057 100644
--- a/resources/views/business/pages/financial-ledger/ledger.blade.php
+++ b/resources/views/business/pages/financial-ledger/ledger.blade.php
@@ -278,6 +278,12 @@
         .ledger-manual-date__button:hover { background:#efe4c8; }
         .ledger-manual-date__button:focus-visible { position:relative; z-index:2; outline:none; box-shadow:0 0 0 3px rgba(133,102,50,.18); }
         .ledger-manual-date__button .material-icons-outlined { font-size:1rem; }
+        .ledger-transaction-account-input { width:100%; min-width:0; height:1.65rem; padding:0 .38rem; border:1px solid transparent; border-radius:.3rem; background:transparent; color:var(--vip-content-ink, #171717); font:inherit; font-size:.7rem; }
+        .ledger-transaction-account-input:hover { border-color:var(--vip-border, #D8D2C7); background:#fff; }
+        .ledger-transaction-account-input:focus { border-color:var(--vip-content-accent-dark, #856632); outline:none; background:#fff; box-shadow:0 0 0 3px rgba(133,102,50,.14); }
+        .ledger-transaction-account-input.is-saving { border-color:var(--vip-content-accent, #B9954F); background:#fffdf6; }
+        .ledger-transaction-account-input.is-error { border-color:var(--vip-danger, #B80000); background:#fff5f5; }
+        .ledger-transaction-account-input:disabled { cursor:wait; opacity:.65; }
         .ledger-manual-actions { display:flex; align-items:center; gap:.25rem; }
         .ledger-manual-action { display:inline-grid; place-items:center; width:1.75rem; height:1.75rem; padding:0; border:1px solid var(--vip-border, #D8D2C7); border-radius:.35rem; background:#fff; color:var(--vip-content-muted, #595959); cursor:pointer; }
         .ledger-manual-action.is-save { border-color:var(--vip-content-accent-dark, #856632); background:var(--vip-content-accent-dark, #856632); color:#fff; }
@@ -547,7 +553,7 @@
             <input type="hidden" name="tab" value="flows">
             <div class="ledger-field"><label for="flows-date">日期</label><input id="flows-date" type="date" name="flows_date" value="{{ request('flows_date') }}"></div>
             <div class="ledger-field"><label for="flows-company">公司</label><input id="flows-company" name="flows_company" value="{{ request('flows_company') }}" placeholder="公司名称"></div>
-            <div class="ledger-field"><label for="flows-account">账户简称</label><input id="flows-account" name="flows_account" value="{{ request('flows_account') }}" placeholder="账户简称"></div>
+            <div class="ledger-field"><label for="flows-account">账户简称</label><input id="flows-account" name="flows_account" list="ledger-account-list" value="{{ request('flows_account') }}" placeholder="输入或选择"></div>
             <div class="ledger-actions"><button class="ledger-btn primary" type="submit"><span class="material-icons-outlined">search</span>查询</button><a class="ledger-btn" href="{{ $tabUrl('flows') }}"><span class="material-icons-outlined">refresh</span>重置</a></div>
         </form>
         <div class="ledger-summary"><div class="ledger-summary__item"><span>流水条数</span><b>{{ number_format((int) ($ledgerFlowSummary['count'] ?? 0)) }}</b></div><div class="ledger-summary__item"><span>期初余额（{{ $ledgerOpeningDate }}）</span><b>{{ $money($meta['opening_sum'] ?? 0) }}</b></div><div class="ledger-summary__item"><span>当期入账</span><b>{{ $money($ledgerFlowSummary['inflow'] ?? 0) }}</b></div><div class="ledger-summary__item"><span>当期出账</span><b>{{ $money($ledgerFlowSummary['outflow'] ?? 0) }}</b></div><div class="ledger-summary__item"><span>期末余额合计</span><b>{{ $money($ledgerFlowSummary['closing'] ?? 0) }}</b></div></div>
@@ -577,11 +583,11 @@
     </section>
 
     {{-- 动账明细 --}}
-    <section class="ledger-panel" id="ledger-panel-transactions" role="tabpanel" data-ledger-panel="transactions" @if ($activeTab !== 'transactions') hidden @endif>
+    <section class="ledger-panel" id="ledger-panel-transactions" role="tabpanel" data-ledger-panel="transactions" data-transaction-account-url-template="{{ route('business.financial-ledger.transactions.account.update', ['id' => '__TRANSACTION__']) }}" @if ($activeTab !== 'transactions') hidden @endif>
         <form class="ledger-toolbar" method="GET" action="{{ $tabUrl('transactions') }}">
             <input type="hidden" name="tab" value="transactions">
             <div class="ledger-field" style="min-width:15rem"><label for="txns-q">关键词</label><input id="txns-q" name="txns_q" value="{{ request('txns_q') }}" placeholder="账户、明细、审批编号"></div>
-            <div class="ledger-field"><label for="txns-account">账户简称</label><input id="txns-account" name="txns_account" value="{{ request('txns_account') }}" placeholder="含未匹配"></div>
+            <div class="ledger-field"><label for="txns-account">账户简称</label><input id="txns-account" name="txns_account" list="ledger-account-list" value="{{ request('txns_account') }}" placeholder="输入或选择（含未匹配）"></div>
             <div class="ledger-field"><label for="txns-source">来源</label><select id="txns-source" name="txns_source"><option value="">全部</option>@foreach ($sourceLabels as $key => $label)<option value="{{ $key }}" @selected(request('txns_source') === $key)>{{ $label }}</option>@endforeach</select></div>
             <div class="ledger-field"><label for="txns-from">日期起</label><input id="txns-from" type="date" name="txns_from" value="{{ request('txns_from') }}"></div>
             <div class="ledger-field"><label for="txns-to">日期止</label><input id="txns-to" type="date" name="txns_to" value="{{ request('txns_to') }}"></div>
@@ -629,11 +635,6 @@
                         </td>
                         <td>
                             <input id="ledger-manual-account" class="ledger-manual-input" form="ledger-manual-transaction-form" type="text" name="account_short" list="ledger-manual-account-options" maxlength="100" placeholder="输入账户简称" autocomplete="off" required data-ledger-manual-account>
-                            <datalist id="ledger-manual-account-options">
-                                @foreach ($manualTransactionAccountOptions as $option)
-                                    <option value="{{ $option['value'] }}" label="{{ $option['label'] }}"></option>
-                                @endforeach
-                            </datalist>
                         </td>
                         <td><input class="ledger-manual-input" form="ledger-manual-transaction-form" type="text" name="detail" maxlength="4000" placeholder="填写明细" required></td>
                         <td><span class="ledger-source-tag">手工录入</span></td>
@@ -651,7 +652,13 @@
                 @forelse ($ledgerTransactions as $row)
                     <tr class="ledger-transaction-row" data-ledger-transaction-row data-transaction-id="{{ $row->id }}" data-source="{{ $row->source }}">
                         <td>{{ $date($row->txn_date) }}</td>
-                        <td class="{{ $row->effective_account_short === '未匹配' ? 'danger' : '' }}">{{ $row->effective_account_short }}</td>
+                        <td>
+                            @if ($canEdit)
+                                <input class="ledger-transaction-account-input" type="text" list="ledger-manual-account-options" value="{{ $row->effective_account_short === '未匹配' ? '' : $row->effective_account_short }}" placeholder="选择账户简称" autocomplete="off" aria-label="修改动账明细账户简称" title="输入并选择账户总表简称" data-ledger-transaction-account data-url="{{ route('business.financial-ledger.transactions.account.update', ['id' => $row->id]) }}" data-previous-account="{{ $row->effective_account_short === '未匹配' ? '' : $row->effective_account_short }}" data-account-group="{{ $row->source === 'manual' || blank($row->source_value) ? 'transaction:' . $row->id : hash('sha256', (string) $row->source . '|' . (string) $row->source_value) }}">
+                            @else
+                                <span class="{{ $row->effective_account_short === '未匹配' ? 'danger' : '' }}">{{ $row->effective_account_short }}</span>
+                            @endif
+                        </td>
                         <td class="wrap">{{ $row->detail }}</td>
                         <td><span class="ledger-source-tag">{{ $sourceLabels[$row->source] ?? $row->source }}</span></td>
                         <td class="num">{{ $row->income > 0 ? $money($row->income) : '' }}</td>
@@ -669,6 +676,11 @@
                 'paginationLabel' => '动账明细分页',
             ])
         </div>
+        <datalist id="ledger-manual-account-options">
+            @foreach ($manualTransactionAccountOptions as $option)
+                <option value="{{ $option['value'] }}" label="{{ $option['label'] }}"></option>
+            @endforeach
+        </datalist>
     </section>
 
     {{-- 账户映射 --}}
@@ -784,7 +796,7 @@
     };
     tabs.forEach((tab) => tab.addEventListener('click', () => {
         const name = tab.dataset.ledgerTab;
-        if (ledgerDependentDataStale && ['accounts', 'shops', 'flows', 'sources'].includes(name)) {
+        if (ledgerDependentDataStale && ['accounts', 'shops', 'flows', 'mapping', 'sources'].includes(name)) {
             const url = new URL(window.location.href);
             url.searchParams.set('tab', name);
             window.location.assign(url.toString());
@@ -829,6 +841,119 @@
     const manualTransactionTrigger = page.querySelector('[data-ledger-manual-trigger]');
     const manualTransactionDraft = page.querySelector('[data-ledger-manual-draft]');
     const manualTransactionForm = page.querySelector('[data-ledger-manual-form]');
+    const transactionAccountUrlTemplate = page.querySelector('#ledger-panel-transactions')?.dataset.transactionAccountUrlTemplate || '';
+    const ledgerAccountOptions = page.querySelector('#ledger-manual-account-options');
+    const ledgerAccountShortValues = new Set(
+        Array.from(ledgerAccountOptions?.options || []).map((option) => option.value)
+    );
+    const ledgerCsrfToken = manualTransactionForm?.querySelector('input[name="_token"]')?.value || '';
+
+    const createTransactionAccountInput = (transactionId, accountShort, accountGroup) => {
+        const input = document.createElement('input');
+        input.className = 'ledger-transaction-account-input';
+        input.type = 'text';
+        input.setAttribute('list', 'ledger-manual-account-options');
+        input.value = accountShort || '';
+        input.placeholder = '选择账户简称';
+        input.autocomplete = 'off';
+        input.setAttribute('aria-label', '修改动账明细账户简称');
+        input.title = '输入并选择账户总表简称';
+        input.dataset.ledgerTransactionAccount = '';
+        input.dataset.url = transactionAccountUrlTemplate.replace('__TRANSACTION__', encodeURIComponent(String(transactionId)));
+        input.dataset.previousAccount = accountShort || '';
+        input.dataset.accountGroup = accountGroup || '';
+
+        return input;
+    };
+
+    const bindTransactionAccountInput = (input) => {
+        if (!input || input.dataset.accountBound === '1') return;
+        input.dataset.accountBound = '1';
+        const previous = () => {
+            input.value = input.dataset.previousAccount || '';
+            input.setCustomValidity('');
+            input.classList.remove('is-error');
+        };
+
+        input.addEventListener('input', () => {
+            input.setCustomValidity('');
+            input.classList.remove('is-error');
+        });
+        input.addEventListener('keydown', (event) => {
+            if (event.key === 'Enter') {
+                event.preventDefault();
+                input.blur();
+            } else if (event.key === 'Escape') {
+                event.preventDefault();
+                previous();
+                input.blur();
+            }
+        });
+        input.addEventListener('change', async () => {
+            const accountShort = input.value.trim();
+            if (!ledgerAccountShortValues.has(accountShort)) {
+                input.setCustomValidity('请选择账户总表中的账户简称');
+                input.classList.add('is-error');
+                input.reportValidity();
+                notify('请选择账户总表中的账户简称', true);
+                return;
+            }
+            if (accountShort === (input.dataset.previousAccount || '')) {
+                input.value = accountShort;
+                input.setCustomValidity('');
+                return;
+            }
+
+            input.disabled = true;
+            input.classList.remove('is-error');
+            input.classList.add('is-saving');
+            try {
+                const response = await fetch(input.dataset.url, {
+                    method: 'POST',
+                    credentials: 'same-origin',
+                    headers: {
+                        'Accept': 'application/json',
+                        'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8',
+                        'X-CSRF-TOKEN': ledgerCsrfToken,
+                        'X-Requested-With': 'XMLHttpRequest',
+                    },
+                    body: new URLSearchParams({ account_short: accountShort }),
+                });
+                const payload = await response.json().catch(() => ({}));
+                if (!response.ok) {
+                    const firstError = Object.values(payload.errors || {})[0]?.[0];
+                    throw new Error(firstError || payload.message || '账户简称保存失败');
+                }
+
+                const targets = payload.scope === 'mapping'
+                    ? Array.from(page.querySelectorAll('[data-ledger-transaction-account]')).filter((item) => (
+                        (item.dataset.accountGroup || '') === payload.group_key
+                    ))
+                    : [input];
+                targets.forEach((item) => {
+                    item.value = payload.account_short;
+                    item.dataset.previousAccount = payload.account_short;
+                    item.setCustomValidity('');
+                    item.classList.remove('is-error');
+                });
+                ledgerDependentDataStale = true;
+                const balance = payload.daily_flow
+                    ? '，当日期末余额 ' + new Intl.NumberFormat('zh-CN', {
+                        minimumFractionDigits: 2,
+                        maximumFractionDigits: 2,
+                    }).format(payload.daily_flow.closing_balance)
+                    : '';
+                notify('账户简称已更新为 ' + payload.account_short + balance);
+            } catch (error) {
+                previous();
+                notify(error.message || '账户简称保存失败', true);
+            } finally {
+                input.disabled = false;
+                input.classList.remove('is-saving');
+            }
+        });
+    };
+
     if (manualTransactionTrigger && manualTransactionDraft && manualTransactionForm) {
         const triggerRow = page.querySelector('[data-ledger-manual-trigger-row]');
         const tokenInput = manualTransactionForm.querySelector('[data-ledger-manual-token]');
@@ -837,14 +962,10 @@
         const dateInput = page.querySelector('[data-ledger-manual-date]');
         const datePickerButton = page.querySelector('[data-ledger-manual-date-picker]');
         const accountInput = page.querySelector('[data-ledger-manual-account]');
-        const accountOptions = page.querySelector('#ledger-manual-account-options');
-        const accountShortValues = new Set(
-            Array.from(accountOptions?.options || []).map((option) => option.value)
-        );
         const validateManualAccount = () => {
             if (!accountInput) return false;
             const accountShort = accountInput.value.trim();
-            const invalid = accountShort !== '' && !accountShortValues.has(accountShort);
+            const invalid = accountShort !== '' && !ledgerAccountShortValues.has(accountShort);
             accountInput.setCustomValidity(invalid ? '请选择账户总表中的账户简称' : '');
             return !invalid;
         };
@@ -906,7 +1027,10 @@
             };
 
             addCell(row.txn_date);
-            addCell(row.account_short);
+            const accountCell = addCell();
+            const accountEditor = createTransactionAccountInput(row.id, row.account_short, 'transaction:' + row.id);
+            accountCell.appendChild(accountEditor);
+            bindTransactionAccountInput(accountEditor);
             addCell(row.detail).classList.add('wrap');
             const sourceCell = addCell();
             const sourceTag = document.createElement('span');
@@ -946,7 +1070,7 @@
         manualTransactionForm.addEventListener('submit', async (event) => {
             event.preventDefault();
             const accountShort = accountInput?.value.trim() || '';
-            if (!accountShortValues.has(accountShort)) {
+            if (!ledgerAccountShortValues.has(accountShort)) {
                 accountInput?.setCustomValidity('请选择账户总表中的账户简称');
                 accountInput?.reportValidity();
                 return;
@@ -1005,6 +1129,8 @@
         });
     }
 
+    page.querySelectorAll('[data-ledger-transaction-account]').forEach(bindTransactionAccountInput);
+
     const accountTemplateDownload = page.querySelector('[data-account-template-download]');
     accountTemplateDownload?.addEventListener('click', () => {
         const status = page.querySelector('[data-account-template-download-status]');
diff --git a/routes/admin.php b/routes/admin.php
index 902c599d..4b8b40e9 100644
--- a/routes/admin.php
+++ b/routes/admin.php
@@ -669,6 +669,11 @@ Route::post('workspace/financial-ledger/transactions/manual', [\App\Http\Control
     ->middleware('business.page:financial-operations,ledger')
     ->name('business.financial-ledger.transactions.manual');
 
+Route::post('workspace/financial-ledger/transactions/{id}/account', [\App\Http\Controllers\Business\FinanceLedger::class, 'updateTransactionAccount'])
+    ->whereNumber('id')
+    ->middleware('business.page:financial-operations,ledger')
+    ->name('business.financial-ledger.transactions.account.update');
+
 Route::post('workspace/financial-ledger/accounts/status', [\App\Http\Controllers\Business\FinanceLedger::class, 'updateAccountStatus'])
     ->middleware('business.page:financial-operations,ledger')
     ->name('business.financial-ledger.accounts.status');
diff --git a/tests/Feature/Business/FinanceLedgerManualTransactionTest.php b/tests/Feature/Business/FinanceLedgerManualTransactionTest.php
index e3865312..79bc5a5d 100644
--- a/tests/Feature/Business/FinanceLedgerManualTransactionTest.php
+++ b/tests/Feature/Business/FinanceLedgerManualTransactionTest.php
@@ -55,6 +55,14 @@ class FinanceLedgerManualTransactionTest extends FeatureTestCase
         ]);
     }
 
+    private function transactionAccountUrl(int $transactionId): string
+    {
+        return route('business.financial-ledger.transactions.account.update', [
+            'company_id' => $this->company->id,
+            'id' => $transactionId,
+        ]);
+    }
+
     private function payload(array $overrides = []): array
     {
         return array_merge([
@@ -204,6 +212,97 @@ class FinanceLedgerManualTransactionTest extends FeatureTestCase
             ->assertJsonPath('total_transactions', 1);
     }
 
+    public function test_transaction_row_can_reassign_the_source_account_mapping(): void
+    {
+        $connection = DB::connection('business_mirror');
+        $transactionId = $connection->table('fin_transactions')->insertGetId([
+            'txn_date' => '2026-10-18',
+            'account_short' => null,
+            'detail' => '待修正来源账户',
+            'income' => 12,
+            'expense' => 0,
+            'approval_no' => 'MAP-ROW-1',
+            'source' => 'dingtalk',
+            'source_value' => 'SOURCE-MAP-ROW-1',
+            'process_type' => '报销',
+            'row_key' => 'manual-account-map-row-1',
+        ]);
+        $connection->table('fin_account_map')->insert([
+            'source' => 'dingtalk',
+            'source_value' => 'SOURCE-MAP-ROW-1',
+            'account_short' => null,
+            'txn_count' => 1,
+            'income_sum' => 12,
+            'expense_sum' => 0,
+        ]);
+
+        $this->loginAs()->get($this->pageUrl())
+            ->assertOk()
+            ->assertSee('data-ledger-transaction-account', false)
+            ->assertSee($this->transactionAccountUrl($transactionId), false);
+
+        $this->loginAs()->postJson($this->transactionAccountUrl($transactionId), [
+            'account_short' => '手工账户乙',
+        ])
+            ->assertOk()
+            ->assertJsonPath('changed', true)
+            ->assertJsonPath('scope', 'mapping')
+            ->assertJsonPath('account_short', '手工账户乙')
+            ->assertJsonPath('daily_flow.closing_balance', 12)
+            ->assertJsonPath('current_balance', 12);
+
+        $this->assertDatabaseHas('fin_account_map', [
+            'source' => 'dingtalk',
+            'source_value' => 'SOURCE-MAP-ROW-1',
+            'account_short' => '手工账户乙',
+            'updated_by' => 'Test User',
+        ], 'business_mirror');
+        $this->assertDatabaseHas('fin_account_map_events', [
+            'source' => 'dingtalk',
+            'source_value' => 'SOURCE-MAP-ROW-1',
+            'old_account_short' => null,
+            'new_account_short' => '手工账户乙',
+            'user_name' => 'Test User',
+        ], 'business_mirror');
+        $this->assertDatabaseHas('fin_daily_flows', [
+            'flow_date' => '2026-10-18',
+            'account_short' => '手工账户乙',
+            'inflow' => 12,
+            'closing_balance' => 12,
+        ], 'business_mirror');
+    }
+
+    public function test_manual_transaction_row_can_change_its_own_account(): void
+    {
+        $this->loginAs()->postJson($this->storeUrl(), $this->payload())->assertCreated();
+        $transactionId = (int) DB::connection('business_mirror')->table('fin_transactions')
+            ->where('source', FinanceLedgerTransactionWriter::MANUAL_SOURCE)
+            ->value('id');
+
+        $this->loginAs()->postJson($this->transactionAccountUrl($transactionId), [
+            'account_short' => '手工账户乙',
+        ])
+            ->assertOk()
+            ->assertJsonPath('changed', true)
+            ->assertJsonPath('scope', 'transaction')
+            ->assertJsonPath('account_short', '手工账户乙')
+            ->assertJsonPath('daily_flow.closing_balance', 25.5)
+            ->assertJsonPath('current_balance', 25.5);
+
+        $this->assertDatabaseHas('fin_transactions', [
+            'id' => $transactionId,
+            'source' => FinanceLedgerTransactionWriter::MANUAL_SOURCE,
+            'account_short' => '手工账户乙',
+            'updated_by' => 'Test User',
+        ], 'business_mirror');
+        $this->assertDatabaseHas('fin_daily_flows', [
+            'flow_date' => '2026-10-18',
+            'account_short' => '手工账户乙',
+            'inflow' => 25.5,
+            'closing_balance' => 25.5,
+        ], 'business_mirror');
+    }
+
     public function test_manual_submit_validates_amount_account_date_and_permission(): void
     {
         $this->withExceptionHandling()->loginAs()->postJson($this->storeUrl(), $this->payload([
diff --git a/tests/Feature/Business/FinanceLedgerNavigationTest.php b/tests/Feature/Business/FinanceLedgerNavigationTest.php
index 4a0fdcbf..456dbf02 100644
--- a/tests/Feature/Business/FinanceLedgerNavigationTest.php
+++ b/tests/Feature/Business/FinanceLedgerNavigationTest.php
@@ -74,6 +74,7 @@ class FinanceLedgerNavigationTest extends FeatureTestCase
             'business.financial-ledger.accounts.status',
             'business.financial-ledger.accounts.type',
             'business.financial-ledger.accounts.template',
+            'business.financial-ledger.transactions.account.update',
             'business.financial-ledger.mapping.shop.preview',
             'business.financial-ledger.mapping.shop.apply',
             'business.financial-ledger.mapping.payable.preview',