diff --git a/furniture-3d-system/src/server/services/__tests__/supply-chain-product-archive.service.test.ts b/furniture-3d-system/src/server/services/__tests__/supply-chain-product-archive.service.test.ts
index e2527f5d..58eedc2d 100644
--- a/furniture-3d-system/src/server/services/__tests__/supply-chain-product-archive.service.test.ts
+++ b/furniture-3d-system/src/server/services/__tests__/supply-chain-product-archive.service.test.ts
@@ -204,10 +204,11 @@ describe('supply-chain product archive field mapping', () => {
   })
 
   it('derives the settlement price from the cost price and modular product tag', () => {
-    expect(settlementPriceText('76.20', '模块化成品,预估尺寸')).toBe('68.58')
-    expect(settlementPriceText('76.20', '模块化部件,简尚-崔桥工厂半成品包装项目仓')).toBe('68.58')
-    expect(settlementPriceText('123.45', '模块化成品')).toBe('111.11')
-    expect(settlementPriceText('85', '模块化部件')).toBe('76.50')
+    expect(settlementPriceText('76.20', '模块化成品,预估尺寸')).toBe('84.67')
+    expect(settlementPriceText('76.20', '模块化部件,简尚-崔桥工厂半成品包装项目仓')).toBe('84.67')
+    expect(settlementPriceText('123.45', '模块化成品')).toBe('137.17')
+    expect(settlementPriceText('85', '模块化部件')).toBe('94.44')
+    expect(settlementPriceText('34.00', '模块化成品')).toBe('37.78')
     expect(settlementPriceText('76.20', '1688一件代发,已匹配')).toBe('76.20')
     expect(settlementPriceText('76.20', '')).toBe('76.20')
     expect(settlementPriceText('', '模块化成品')).toBe('')
diff --git a/furniture-3d-system/src/server/services/supply-chain-product-archive.mapper.ts b/furniture-3d-system/src/server/services/supply-chain-product-archive.mapper.ts
index 6cb229bb..cc92b83a 100644
--- a/furniture-3d-system/src/server/services/supply-chain-product-archive.mapper.ts
+++ b/furniture-3d-system/src/server/services/supply-chain-product-archive.mapper.ts
@@ -37,11 +37,12 @@ function percentageText(
   return value ? `${value.mul(100).toFixed(2)}%` : ''
 }
 
-// 结算价展示口径（2026-10-14 用户确认）：结算价 = 成本价 × 系数，非模块化 ×1
-// 原样展示，模块化 ×0.9（四舍五入保留两位）。模块化以产品标签含「模块化」为
-// 准（聚水潭标签里的“模块化成品/模块化部件”）。查询映射层实时计算，不落库。
+// 结算价展示口径（2026-10-15 用户修正）：结算价 = 成本价 ÷ 0.9（模块化），
+// 非模块化原样展示（成本价即结算价）。模块化以产品标签含「模块化」为准
+// （聚水潭标签里的“模块化成品/模块化部件”，其成本价按 9 折记）。查询映射层
+// 实时计算，不落库。
 const SETTLEMENT_MODULAR_TAG = '模块化'
-const SETTLEMENT_MODULAR_FACTOR = 0.9
+const SETTLEMENT_MODULAR_DIVISOR = 0.9
 
 export function settlementPriceText(
   costPrice: string | null | undefined,
@@ -52,8 +53,8 @@ export function settlementPriceText(
   if (!(productTag ?? '').includes(SETTLEMENT_MODULAR_TAG)) return cost
   const value = Number(cost)
   if (!Number.isFinite(value)) return ''
-  // 先取整到分再打折，避免浮点误差让 123.45×0.9 这类半厘值四舍五入方向漂移。
-  const settled = Math.round(Math.round(value * 100) * SETTLEMENT_MODULAR_FACTOR) / 100
+  // 先取整到分再除，避免浮点误差让 123.45÷0.9 这类值四舍五入方向漂移。
+  const settled = Math.round(Math.round(value * 100) / SETTLEMENT_MODULAR_DIVISOR) / 100
   return settled.toFixed(2)
 }