diff --git a/server/src/controllers/adminOrder.ts b/server/src/controllers/adminOrder.ts
index 042ff434..aeefddc9 100644
--- a/server/src/controllers/adminOrder.ts
+++ b/server/src/controllers/adminOrder.ts
@@ -1,6 +1,7 @@
 import { Request, Response } from 'express'
 import pool from '../utils/db'
 import { RowDataPacket, ResultSetHeader } from 'mysql2'
+import { syncProductMinPrice } from '../utils/syncPrice'
 
 function toMySQLDatetime(val: string | Date): string {
   const d = typeof val === 'string' ? new Date(val) : val
@@ -443,6 +444,8 @@ export async function adminReturnOrder(req: Request, res: Response): Promise<voi
              snap.setting_fee, snap.total_labor_cost, snap.total_price]
           )
         }
+        // 同步商品最低价
+        if (snap.product_id) await syncProductMinPrice(snap.product_id, conn)
       }
     }
 
@@ -632,6 +635,8 @@ export async function adminUpdateOrderStatus(req: Request, res: Response): Promi
           await conn.execute('DELETE FROM cart_items WHERE spec_data_id = ?', [spec_data_id])
           // 删除 spec_data
           await conn.execute('DELETE FROM spec_data WHERE id = ?', [spec_data_id])
+          // 同步商品最低价
+          if (specFields.product_id) await syncProductMinPrice(specFields.product_id, conn)
         }
       }
     }
@@ -663,6 +668,8 @@ export async function adminUpdateOrderStatus(req: Request, res: Response): Promi
                snap.setting_fee, snap.total_labor_cost, snap.total_price]
             )
           }
+          // 同步商品最低价
+          await syncProductMinPrice(snap.product_id, conn)
         }
       }
     }
diff --git a/server/src/controllers/goldPrice.ts b/server/src/controllers/goldPrice.ts
index dac41a95..f25ce813 100644
--- a/server/src/controllers/goldPrice.ts
+++ b/server/src/controllers/goldPrice.ts
@@ -1,6 +1,7 @@
 import { Request, Response } from 'express'
 import pool from '../utils/db'
 import { RowDataPacket, ResultSetHeader } from 'mysql2'
+import { syncProductMinPrice } from '../utils/syncPrice'
 
 const PLATINUM_FINENESS = '铂金PT950'
 
@@ -72,6 +73,11 @@ export async function setGoldPrice(req: Request, res: Response): Promise<void> {
     const updated = countRows[0].cnt
 
     await conn.commit()
+
+    // 同步所有商品最低价
+    const [allProducts] = await pool.execute<RowDataPacket[]>('SELECT DISTINCT product_id FROM spec_data WHERE fineness != ?', [PLATINUM_FINENESS])
+    for (const p of allProducts) { await syncProductMinPrice(p.product_id) }
+
     res.json({ code: 0, message: `金价已更新为 ${newPrice}，已重算 ${updated} 条规格数据` })
   } catch (err) {
     await conn.rollback()
@@ -138,6 +144,11 @@ export async function setPlatinumPrice(req: Request, res: Response): Promise<voi
     const updated = countRows[0].cnt
 
     await conn.commit()
+
+    // 同步所有铂金商品最低价
+    const [allProducts] = await pool.execute<RowDataPacket[]>('SELECT DISTINCT product_id FROM spec_data WHERE fineness = ?', [PLATINUM_FINENESS])
+    for (const p of allProducts) { await syncProductMinPrice(p.product_id) }
+
     res.json({ code: 0, message: `铂金价格已更新为 ${newPrice}，已重算 ${updated} 条铂金规格数据` })
   } catch (err) {
     await conn.rollback()
diff --git a/server/src/controllers/specDataIO.ts b/server/src/controllers/specDataIO.ts
index f3542b17..46391d58 100644
--- a/server/src/controllers/specDataIO.ts
+++ b/server/src/controllers/specDataIO.ts
@@ -1,6 +1,7 @@
 import { Request, Response } from 'express'
 import pool from '../utils/db'
 import { RowDataPacket, ResultSetHeader } from 'mysql2'
+import { syncProductMinPrice } from '../utils/syncPrice'
 
 // 所有字段（用于数据库读写）
 const ALL_DB_HEADERS = [
@@ -177,6 +178,7 @@ export async function adminCreateSpecData(req: Request, res: Response): Promise<
        d.sideStoneCount||0, d.sideStoneWeight||0, d.sideStoneUnitPrice||0, d.sideStoneAmount||0,
        d.accessoryAmount||0, d.processingFee||0, d.settingFee||0, d.totalLaborCost||0, d.totalPrice||0]
     )
+    await syncProductMinPrice(Number(id))
     res.json({ code: 0, data: { id: result.insertId } })
   } catch (err) {
     console.error('adminCreateSpecData error:', err)
@@ -187,8 +189,9 @@ export async function adminCreateSpecData(req: Request, res: Response): Promise<
 // DELETE /api/admin/products/:productId/spec-data/:specId
 export async function adminDeleteSpecData(req: Request, res: Response): Promise<void> {
   try {
-    const { specId } = req.params
+    const { productId, specId } = req.params
     await pool.execute('DELETE FROM spec_data WHERE id = ?', [specId])
+    await syncProductMinPrice(Number(productId))
     res.json({ code: 0, message: '删除成功' })
   } catch (err) {
     console.error('adminDeleteSpecData error:', err)
@@ -199,7 +202,7 @@ export async function adminDeleteSpecData(req: Request, res: Response): Promise<
 // PUT /api/admin/products/:productId/spec-data/:specId - 编辑规格数据
 export async function adminUpdateSpecData(req: Request, res: Response): Promise<void> {
   try {
-    const { specId } = req.params
+    const { productId, specId } = req.params
     const d = req.body
     if (d.barcode) {
       const [dup] = await pool.execute<RowDataPacket[]>('SELECT id FROM spec_data WHERE barcode = ? AND id != ?', [d.barcode, specId])
@@ -220,6 +223,7 @@ export async function adminUpdateSpecData(req: Request, res: Response): Promise<
        d.accessoryAmount||0, d.processingFee||0, d.settingFee||0, d.totalLaborCost||0, d.totalPrice||0,
        specId]
     )
+    await syncProductMinPrice(Number(productId))
     res.json({ code: 0, message: '更新成功' })
   } catch (err) {
     console.error('adminUpdateSpecData error:', err)
@@ -440,6 +444,13 @@ export async function importSpecData(req: Request, res: Response): Promise<void>
     }
 
     await conn.commit()
+
+    // 同步所有涉及商品的最低价
+    const affectedProductIds = [...new Set(Object.values(styleNoToProductId))]
+    for (const pid of affectedProductIds) {
+      await syncProductMinPrice(pid)
+    }
+
     res.json({
       code: 0,
       data: { imported, skipped, warnings: errors.length > 0 ? errors : undefined },
diff --git a/server/src/utils/syncPrice.ts b/server/src/utils/syncPrice.ts
new file mode 100644
index 00000000..718e8929
--- /dev/null
+++ b/server/src/utils/syncPrice.ts
@@ -0,0 +1,17 @@
+import pool from './db'
+import { RowDataPacket } from 'mysql2'
+
+/**
+ * 同步商品价格为其规格数据中的最低价。
+ * 如果没有规格数据，价格设为 0。
+ * 支持传入 connection（事务中使用）或使用默认 pool。
+ */
+export async function syncProductMinPrice(productId: number, conn?: any): Promise<void> {
+  const db = conn || pool
+  const [rows] = await db.execute<RowDataPacket[]>(
+    'SELECT MIN(total_price) as min_price FROM spec_data WHERE product_id = ?',
+    [productId]
+  )
+  const minPrice = rows[0]?.min_price ?? 0
+  await db.execute('UPDATE products SET base_price = ? WHERE id = ?', [minPrice, productId])
+}