diff --git a/app/Business/SystemizationTodoAuditLogger.php b/app/Business/SystemizationTodoAuditLogger.php
index 87c612d0..d91de3cd 100644
--- a/app/Business/SystemizationTodoAuditLogger.php
+++ b/app/Business/SystemizationTodoAuditLogger.php
@@ -17,7 +17,7 @@ class SystemizationTodoAuditLogger
 
     public const ACTION_LABELS = [
         'create' => '新增',
-        'update' => '修改',
+        'update' => '改动',
         'delete' => '删除',
         'import' => '导入',
     ];
@@ -149,18 +149,6 @@ class SystemizationTodoAuditLogger
         }
 
         DB::table(self::TABLE)->insert($rows);
-        $companyIds = array_values(array_unique(array_column($rows, 'company_id')));
-        foreach ($companyIds as $companyId) {
-            $maxId = (int) DB::table(self::TABLE)
-                ->where('company_id', $companyId)
-                ->max('id');
-            if ($maxId > self::HISTORY_LIMIT) {
-                DB::table(self::TABLE)
-                    ->where('company_id', $companyId)
-                    ->where('id', '<=', $maxId - self::HISTORY_LIMIT)
-                    ->delete();
-            }
-        }
     }
 
     /**
@@ -170,6 +158,7 @@ class SystemizationTodoAuditLogger
         int $companyId,
         int $limit = self::HISTORY_LIMIT,
         ?string $from = null,
+        ?string $date = null,
     ): array
     {
         if (! $this->tableReady()) {
@@ -179,6 +168,10 @@ class SystemizationTodoAuditLogger
         return DB::table(self::TABLE)
             ->where('company_id', $companyId)
             ->when($from !== null && $from !== '', fn ($query) => $query->where('at', '>=', $from))
+            ->when($date !== null && $date !== '', function ($query) use ($date): void {
+                $query->where('at', '>=', $date . ' 00:00:00')
+                    ->where('at', '<', Carbon::parse($date)->addDay()->toDateString() . ' 00:00:00');
+            })
             ->orderByDesc('id')
             ->limit(max(1, min($limit, self::HISTORY_LIMIT)))
             ->get()
diff --git a/app/Http/Controllers/Business/SystemizationTodos.php b/app/Http/Controllers/Business/SystemizationTodos.php
index c6f5f3aa..e571b7fb 100644
--- a/app/Http/Controllers/Business/SystemizationTodos.php
+++ b/app/Http/Controllers/Business/SystemizationTodos.php
@@ -1509,20 +1509,21 @@ class SystemizationTodos extends Controller
         ]);
     }
 
-    public function history(): JsonResponse
+    public function history(Request $request): JsonResponse
     {
-        $from = $this->historyStartAt();
+        $date = $this->historyDate($request);
         $events = $this->audit->history(
             (int) company_id(),
             SystemizationTodoAuditLogger::HISTORY_LIMIT,
-            $from,
+            null,
+            $date,
         );
 
         return response()->json([
             'events' => $events,
             'total' => count($events),
             'limit' => SystemizationTodoAuditLogger::HISTORY_LIMIT,
-            'from' => $from,
+            'date' => $date,
         ]);
     }
 
@@ -1569,12 +1570,13 @@ class SystemizationTodos extends Controller
     {
         $action = trim((string) $request->query('action', ''));
         $keyword = trim((string) $request->query('keyword', ''));
-        $from = $this->historyStartAt();
+        $date = $this->historyDate($request);
         $rows = array_values(array_filter(
             $this->audit->history(
                 (int) company_id(),
                 SystemizationTodoAuditLogger::HISTORY_LIMIT,
-                $from,
+                null,
+                $date,
             ),
             fn (array $row): bool => $this->historyMatches($row, $action, $keyword),
         ));
@@ -1601,9 +1603,13 @@ class SystemizationTodos extends Controller
         ]);
     }
 
-    private function historyStartAt(): string
+    private function historyDate(Request $request): string
     {
-        return $this->audit->platformNow()->startOfDay()->toDateTimeString();
+        $data = $request->validate([
+            'date' => ['nullable', 'date_format:Y-m-d'],
+        ]);
+
+        return trim((string) ($data['date'] ?? ''));
     }
 
     private function historyMatches(array $row, string $action, string $keyword): bool
diff --git a/resources/views/business/pages/systemization-todos.blade.php b/resources/views/business/pages/systemization-todos.blade.php
index e76eb571..7e641a84 100644
--- a/resources/views/business/pages/systemization-todos.blade.php
+++ b/resources/views/business/pages/systemization-todos.blade.php
@@ -295,6 +295,7 @@
         .sys-todo-history-tools { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; margin-bottom:.75rem; }
         .sys-todo-history-tools select, .sys-todo-history-tools input { min-height:2.1rem; padding:0 .6rem; border:1px solid var(--sys-border); border-radius:.45rem; background:#fff; color:#171717; font:inherit; font-size:.78rem; }
         .sys-todo-history-tools input { flex:1 1 16rem; min-width:12rem; }
+        .sys-todo-history-tools input[type="date"] { flex:0 0 9.8rem; min-width:9.8rem; }
         .sys-todo-history-tools button { min-height:2.1rem; padding:0 .75rem; border:1px solid var(--sys-border); border-radius:.45rem; background:#fff; color:#171717; font:inherit; font-size:.78rem; cursor:pointer; }
         .sys-todo-history-tools button:hover { border-color:var(--sys-gold); background:var(--sys-gold-soft); }
         .sys-todo-history-meta { color:#666; font-size:.72rem; }
@@ -311,6 +312,7 @@
         .sys-todo-history-tag--create,.sys-todo-history-tag--import { border-color:#bad0ac; background:#f2f8ed; color:#53793e; }
         .sys-todo-history-tag--update { border-color:#dbbf7a; background:#fff7df; color:#935f07; }
         .sys-todo-history-tag--delete { border-color:#e7c3c3; background:#fff3f3; color:#b80000; }
+        .sys-todo-history-table__day td { padding:.46rem .65rem; border-bottom:1px solid #d8cbb7; background:#f8f2e7; color:#594a35; font-weight:600; }
         .sys-todo-history-item-title { margin-top:.2rem; color:#595959; font-size:.72rem; }
         .sys-todo-history-changes { margin:0; padding-left:1rem; }
         .sys-todo-history-changes li + li { margin-top:.22rem; }
@@ -1091,14 +1093,15 @@
                 <select data-sys-todo-history-action aria-label="按操作筛选">
                     <option value="">全部操作</option>
                     <option value="create">新增</option>
-                    <option value="update">修改</option>
+                    <option value="update">改动</option>
                     <option value="delete">删除</option>
                     <option value="import">导入</option>
                 </select>
+                <input type="date" data-sys-todo-history-date aria-label="按日期筛选" title="按日期筛选">
                 <input type="search" data-sys-todo-history-keyword placeholder="搜类型、内容、待办事项、变更内容或操作人" aria-label="搜索操作记录">
                 <button type="button" data-sys-todo-history-export>导出记录 CSV</button>
                 <span class="sys-todo-history-meta" data-sys-todo-history-meta></span>
-                <span class="sys-todo-history-meta">从今天开始显示，时间为北京时间，最多显示最近 500 条</span>
+                <span class="sys-todo-history-meta">按北京时间记录并长期保留，可选择日期查看；单次最多显示 500 条</span>
             </div>
             <div class="sys-todo-history-scroll">
                 <table class="sys-todo-history-table">
@@ -1421,6 +1424,7 @@
             var groupNote = groupDialog.querySelector('[data-sys-todo-group-note]');
             var historyDialog = document.getElementById('sysTodoHistoryDialog');
             var historyAction = historyDialog.querySelector('[data-sys-todo-history-action]');
+            var historyDate = historyDialog.querySelector('[data-sys-todo-history-date]');
             var historyKeyword = historyDialog.querySelector('[data-sys-todo-history-keyword]');
             var historyExport = historyDialog.querySelector('[data-sys-todo-history-export]');
             var historyMeta = historyDialog.querySelector('[data-sys-todo-history-meta]');
@@ -2374,7 +2378,24 @@
             function renderHistory() {
                 var events = historyFilteredEvents();
                 historyBody.replaceChildren();
+                var dayCounts = {};
                 events.forEach(function (event) {
+                    var day = String(event.at || '').slice(0, 10);
+                    dayCounts[day] = (dayCounts[day] || 0) + 1;
+                });
+                var renderedDay = '';
+                events.forEach(function (event) {
+                    var day = String(event.at || '').slice(0, 10);
+                    if (day !== renderedDay) {
+                        renderedDay = day;
+                        var dayRow = document.createElement('tr');
+                        dayRow.className = 'sys-todo-history-table__day';
+                        var dayCell = document.createElement('td');
+                        dayCell.colSpan = 5;
+                        dayCell.textContent = (day || '日期未知') + ' · ' + dayCounts[day] + ' 条';
+                        dayRow.appendChild(dayCell);
+                        historyBody.appendChild(dayRow);
+                    }
                     var row = document.createElement('tr');
 
                     var at = document.createElement('td');
@@ -2415,10 +2436,11 @@
                 historyEmpty.hidden = events.length > 0;
                 historyEmpty.textContent = historyEvents.length
                     ? '没有符合条件的操作记录。'
-                    : '暂无操作记录；从本次功能上线后的第一次新增、修改、删除或导入开始记录。';
+                    : '暂无操作记录；从本次功能上线后的第一次新增、改动、删除或导入开始记录。';
                 historyMeta.textContent = '显示 ' + events.length + ' / ' + historyEvents.length + ' 条';
                 var params = new URLSearchParams();
                 if (historyAction.value) params.set('action', historyAction.value);
+                if (historyDate.value) params.set('date', historyDate.value);
                 if (historyKeyword.value.trim()) params.set('keyword', historyKeyword.value.trim());
                 historyExport.setAttribute(
                     'data-export-url',
@@ -2428,7 +2450,9 @@
 
             function loadHistory() {
                 historyMeta.textContent = '正在读取…';
-                fetch(routes.history, {
+                var params = new URLSearchParams();
+                if (historyDate.value) params.set('date', historyDate.value);
+                fetch(routes.history + (params.toString() ? '?' + params.toString() : ''), {
                     headers: { 'Accept': 'application/json', 'X-Requested-With': 'XMLHttpRequest' }
                 }).then(function (response) {
                     return response.json().catch(function () { return {}; }).then(function (data) {
@@ -2580,6 +2604,7 @@
                 if (event.target === historyDialog) closeHistoryDialog();
             });
             historyAction.addEventListener('change', renderHistory);
+            historyDate.addEventListener('change', loadHistory);
             historyKeyword.addEventListener('input', renderHistory);
             historyExport.addEventListener('click', function () {
                 var url = historyExport.getAttribute('data-export-url');
diff --git a/tests/Feature/Business/SystemizationTodosTest.php b/tests/Feature/Business/SystemizationTodosTest.php
index bf968074..ccaee28b 100644
--- a/tests/Feature/Business/SystemizationTodosTest.php
+++ b/tests/Feature/Business/SystemizationTodosTest.php
@@ -47,6 +47,9 @@ class SystemizationTodosTest extends FeatureTestCase
             ->assertSee('data-sys-todo-history-open', false)
             ->assertSee('id="sysTodoHistoryDialog"', false)
             ->assertSee('data-sys-todo-history-export', false)
+            ->assertSee('data-sys-todo-history-date', false)
+            ->assertSee('<option value="update">改动</option>', false)
+            ->assertSeeText('按北京时间记录并长期保留')
             ->assertSee('data-sys-todo-inline-add', false)
             ->assertSee('data-sys-todo-col-resizer', false)
             ->assertSee('data-date-picker', false)
@@ -2051,7 +2054,7 @@ class SystemizationTodosTest extends FeatureTestCase
             route('business.systemization-todos.history.export') . '?action=update'
         )->streamedContent();
         $this->assertStringContainsString('时间,操作,类型,内容,待办事项,变更内容,操作人', $csv);
-        $this->assertStringContainsString('修改,收入,操作记录测试,修改后的待办', $csv);
+        $this->assertStringContainsString('改动,收入,操作记录测试,修改后的待办', $csv);
         $this->assertStringNotContainsString('删除前：', $csv);
         $this->assertStringNotContainsString('新增：', $csv);
     }
@@ -2115,7 +2118,7 @@ class SystemizationTodosTest extends FeatureTestCase
         $this->assertSoftDeleted('business_systemization_todos', ['id' => $todo->id]);
     }
 
-    public function test_operation_history_starts_from_today(): void
+    public function test_operation_history_keeps_and_filters_records_across_days(): void
     {
         $this->loginAs();
 
@@ -2131,28 +2134,44 @@ class SystemizationTodosTest extends FeatureTestCase
             ])->assertRedirect();
 
             $this->travelTo(Carbon::parse('2026-10-28 09:00:00', 'Asia/Shanghai'));
-            $this->post(route('business.systemization-todos.store'), [
+            $todo = SystemizationTodo::query()->firstOrFail();
+            $this->patch(route('business.systemization-todos.update', ['todo' => $todo->id]), [
                 'category' => '收入',
                 'section' => '操作记录日期',
-                'title' => '今天记录',
+                'title' => '今天改动记录',
                 'owner' => '晨曦',
                 'assignee' => '栎阳',
+                'start_date' => '2026-10-27',
+                'due_date' => '2026-10-29',
                 'status' => SystemizationTodo::STATUS_INCOMPLETE,
             ])->assertRedirect();
 
             $history = $this->getJson(route('business.systemization-todos.history'))
                 ->assertOk()
-                ->assertJsonPath('from', '2026-10-28 00:00:00')
+                ->assertJsonPath('date', '')
                 ->json();
 
             $titles = array_column($history['events'], 'title');
-            $this->assertContains('今天记录', $titles);
-            $this->assertNotContains('昨天记录', $titles);
+            $this->assertContains('今天改动记录', $titles);
+            $this->assertContains('昨天记录', $titles);
+            $this->assertSame(['改动', '新增'], array_column($history['events'], 'action_label'));
+
+            $yesterday = $this->getJson(route('business.systemization-todos.history') . '?date=2026-10-27')
+                ->assertOk()
+                ->assertJsonPath('date', '2026-10-27')
+                ->json();
+            $this->assertSame(['create'], array_column($yesterday['events'], 'action'));
+            $this->assertSame(['昨天记录'], array_column($yesterday['events'], 'title'));
+
+            $this->withExceptionHandling()
+                ->getJson(route('business.systemization-todos.history') . '?date=2026-02-30')
+                ->assertUnprocessable();
 
             $csv = $this->get(route('business.systemization-todos.history.export'))
                 ->streamedContent();
-            $this->assertStringContainsString('今天记录', $csv);
-            $this->assertStringNotContainsString('昨天记录', $csv);
+            $this->assertStringContainsString('昨天记录', $csv);
+            $this->assertStringContainsString('今天改动记录', $csv);
+            $this->assertStringContainsString('改动', $csv);
         } finally {
             $this->travelBack();
         }