diff --git a/backend/src/routes/portal.routes.ts b/backend/src/routes/portal.routes.ts
index 8a45f10..3f22937 100644
--- a/backend/src/routes/portal.routes.ts
+++ b/backend/src/routes/portal.routes.ts
@@ -903,6 +903,21 @@ router.get('/profile', portalAuth, async (req: any, res, next) => {
       }
     }
 
+    // 查询最新月份的专项附加扣除明细
+    const latestDeductionRecord = await (prisma as any).specialDeductionRecord.findFirst({
+      where: { employeeId, orgId },
+      orderBy: { month: 'desc' },
+    })
+    const latestDeduction = latestDeductionRecord ? {
+      month: latestDeductionRecord.month,
+      children: latestDeductionRecord.children || 0,
+      elderly: latestDeductionRecord.elderly || 0,
+      housing: latestDeductionRecord.housing || 0,
+      education: latestDeductionRecord.education || 0,
+      infant: latestDeductionRecord.infant || 0,
+      remark: latestDeductionRecord.remark || '',
+    } : null
+
     res.json({
       success: true,
       data: {
@@ -925,6 +940,7 @@ router.get('/profile', portalAuth, async (req: any, res, next) => {
         employeeNo: emp.employeeNo || '',
         femaleWorkerType: emp.femaleWorkerType || '',
         specialDeduction: emp.specialDeduction ?? 0,
+        specialDeductionDetail: latestDeduction,
       },
     })
   } catch (err) { next(err) }
@@ -940,7 +956,7 @@ router.put('/profile', portalAuth, async (req: any, res, next) => {
     const {
       emergencyContact, emergencyPhone, address,
       bankAccount, bankName, education, city,
-      specialDeduction,
+      specialDeductionDetail,
     } = req.body
 
     // 构建更新数据（仅允许员工自行编辑的字段）
@@ -955,9 +971,38 @@ router.put('/profile', portalAuth, async (req: any, res, next) => {
     if (bankAccount !== undefined && bankAccount) {
       updateData.bankAccount = encrypt(bankAccount)
     }
-    // 专项附加扣除（子女教育、赡养老人等，员工自行填报）
-    if (specialDeduction !== undefined) {
-      updateData.specialDeduction = Number(specialDeduction) || 0
+
+    // 专项附加扣除明细保存到 SpecialDeductionRecord 表（当前月份）
+    if (specialDeductionDetail && typeof specialDeductionDetail === 'object') {
+      const now = new Date()
+      const currentMonth = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}`
+      const { children, elderly, housing, education: dedEducation, infant, remark } = specialDeductionDetail
+      const total = (Number(children) || 0) + (Number(elderly) || 0) + (Number(housing) || 0) + (Number(dedEducation) || 0) + (Number(infant) || 0)
+      await (prisma as any).specialDeductionRecord.upsert({
+        where: { employeeId_month: { employeeId, month: currentMonth } },
+        create: {
+          orgId, employeeId, month: currentMonth,
+          amount: total,
+          children: Number(children) || 0,
+          elderly: Number(elderly) || 0,
+          housing: Number(housing) || 0,
+          education: Number(dedEducation) || 0,
+          infant: Number(infant) || 0,
+          remark: remark || null,
+          createdBy: employeeId,
+        },
+        update: {
+          amount: total,
+          children: Number(children) || 0,
+          elderly: Number(elderly) || 0,
+          housing: Number(housing) || 0,
+          education: Number(dedEducation) || 0,
+          infant: Number(infant) || 0,
+          remark: remark || null,
+        },
+      })
+      // 同步便捷字段
+      updateData.specialDeduction = total
     }
 
     await prisma.employee.update({ where: { id: employeeId }, data: updateData })
diff --git a/frontend/src/pages/portal/MyProfile.tsx b/frontend/src/pages/portal/MyProfile.tsx
index 0ce2fb1..e91365c 100644
--- a/frontend/src/pages/portal/MyProfile.tsx
+++ b/frontend/src/pages/portal/MyProfile.tsx
@@ -23,7 +23,14 @@ export default function MyProfile() {
     bankName: '',
     education: '',
     city: '',
-    specialDeduction: 0,
+  })
+  const [deductionForm, setDeductionForm] = useState({
+    children: 0,
+    elderly: 0,
+    housing: 0,
+    education: 0,
+    infant: 0,
+    remark: '',
   })
 
   const { data: profile, isLoading } = useQuery<any>({
@@ -41,7 +48,15 @@ export default function MyProfile() {
         bankName: profile.bankName || '',
         education: profile.education || '',
         city: profile.city || '',
-        specialDeduction: profile.specialDeduction ?? 0,
+      })
+      const d = profile.specialDeductionDetail
+      setDeductionForm({
+        children: d?.children || 0,
+        elderly: d?.elderly || 0,
+        housing: d?.housing || 0,
+        education: d?.education || 0,
+        infant: d?.infant || 0,
+        remark: d?.remark || '',
       })
     }
   }, [profile])
@@ -59,7 +74,7 @@ export default function MyProfile() {
   })
 
   const handleSave = () => {
-    updateMutation.mutate(form)
+    updateMutation.mutate({ ...form, specialDeductionDetail: deductionForm })
   }
 
   if (isLoading) {
@@ -211,15 +226,77 @@ export default function MyProfile() {
               disabled={!editing}
             />
           </div>
-          <div>
-            <Label>专项附加扣除（元/月）</Label>
-            <Input
-              type="number"
-              value={form.specialDeduction}
-              onChange={(e) => setForm({ ...form, specialDeduction: Number(e.target.value) || 0 })}
-              placeholder="子女教育、赡养老人等，0表示无"
-              disabled={!editing}
-            />
+        </div>
+
+        {/* 专项附加扣除明细 */}
+        <div className="mt-4 pt-4 border-t">
+          <div className="flex items-center justify-between mb-3">
+            <h3 className="text-xs font-medium text-gray-700">专项附加扣除（元/月）</h3>
+            <span className="text-xs text-gray-400">
+              合计：¥{((deductionForm.children || 0) + (deductionForm.elderly || 0) + (deductionForm.housing || 0) + (deductionForm.education || 0) + (deductionForm.infant || 0)).toLocaleString('zh-CN', { minimumFractionDigits: 2 })}
+              {profile.specialDeductionDetail?.month && `（${profile.specialDeductionDetail.month}月记录）`}
+            </span>
+          </div>
+          <div className="grid grid-cols-2 md:grid-cols-3 gap-3">
+            <div>
+              <Label>子女教育</Label>
+              <Input
+                type="number"
+                value={deductionForm.children}
+                onChange={(e) => setDeductionForm({ ...deductionForm, children: Number(e.target.value) || 0 })}
+                placeholder="0"
+                disabled={!editing}
+              />
+            </div>
+            <div>
+              <Label>赡养老人</Label>
+              <Input
+                type="number"
+                value={deductionForm.elderly}
+                onChange={(e) => setDeductionForm({ ...deductionForm, elderly: Number(e.target.value) || 0 })}
+                placeholder="0"
+                disabled={!editing}
+              />
+            </div>
+            <div>
+              <Label>住房贷款/租金</Label>
+              <Input
+                type="number"
+                value={deductionForm.housing}
+                onChange={(e) => setDeductionForm({ ...deductionForm, housing: Number(e.target.value) || 0 })}
+                placeholder="0"
+                disabled={!editing}
+              />
+            </div>
+            <div>
+              <Label>继续教育</Label>
+              <Input
+                type="number"
+                value={deductionForm.education}
+                onChange={(e) => setDeductionForm({ ...deductionForm, education: Number(e.target.value) || 0 })}
+                placeholder="0"
+                disabled={!editing}
+              />
+            </div>
+            <div>
+              <Label>婴幼儿照护</Label>
+              <Input
+                type="number"
+                value={deductionForm.infant}
+                onChange={(e) => setDeductionForm({ ...deductionForm, infant: Number(e.target.value) || 0 })}
+                placeholder="0"
+                disabled={!editing}
+              />
+            </div>
+            <div className="md:col-span-3">
+              <Label>备注</Label>
+              <Input
+                value={deductionForm.remark}
+                onChange={(e) => setDeductionForm({ ...deductionForm, remark: e.target.value })}
+                placeholder="可选备注信息"
+                disabled={!editing}
+              />
+            </div>
           </div>
         </div>