diff --git a/backend/src/routes/roster.routes.ts b/backend/src/routes/roster.routes.ts
index 4a88aa5..982d098 100644
--- a/backend/src/routes/roster.routes.ts
+++ b/backend/src/routes/roster.routes.ts
@@ -1467,7 +1467,11 @@ router.post('/:id/salary-change', authMiddleware, async (req: AuthRequest, res,
     })
 
     // 同步 Employee 便捷字段（含工资结构）
-    const updateData: any = { monthlySalary: encrypt(String(newSalary)) }
+    // 如果同时传了 baseSalary 和 performanceSalary，自动计算 monthlySalary = base + perf
+    const finalSalary = (baseSalary !== undefined && performanceSalary !== undefined)
+      ? (Number(baseSalary) || 0) + (Number(performanceSalary) || 0)
+      : newSalary
+    const updateData: any = { monthlySalary: encrypt(String(finalSalary)) }
     if (baseSalary !== undefined) updateData.baseSalary = encrypt(String(Number(baseSalary) || 0))
     if (performanceSalary !== undefined) updateData.performanceSalary = encrypt(String(Number(performanceSalary) || 0))
     await prisma.employee.update({
diff --git a/backend/src/services/contract.service.ts b/backend/src/services/contract.service.ts
index 73069f1..ae9210e 100644
--- a/backend/src/services/contract.service.ts
+++ b/backend/src/services/contract.service.ts
@@ -690,8 +690,11 @@ export async function updateEmployee(orgId: string, id: string, data: any) {
   if (data.hireDate !== undefined) updateData.hireDate = new Date(data.hireDate)
   if (data.monthlySalary !== undefined) {
     const oldSalary = Number(decrypt(employee.monthlySalary)) || 0
-    const newSalary = Number(data.monthlySalary) || 0
-    updateData.monthlySalary = encrypt(data.monthlySalary)
+    // 如果同时传了 baseSalary 和 performanceSalary，自动计算 monthlySalary = base + perf
+    const baseNum = data.baseSalary !== undefined ? Number(data.baseSalary) || 0 : null
+    const perfNum = data.performanceSalary !== undefined ? Number(data.performanceSalary) || 0 : null
+    const newSalary = (baseNum !== null && perfNum !== null) ? baseNum + perfNum : (Number(data.monthlySalary) || 0)
+    updateData.monthlySalary = encrypt(String(newSalary))
     // 同步更新工资结构
     if (data.baseSalary !== undefined) {
       updateData.baseSalary = encrypt(String(Number(data.baseSalary) || 0))