diff --git a/backend/app/api/v1/endpoints/users.py b/backend/app/api/v1/endpoints/users.py
index 619ec18..7fb6ec6 100644
--- a/backend/app/api/v1/endpoints/users.py
+++ b/backend/app/api/v1/endpoints/users.py
@@ -25,20 +25,37 @@ def list_users(
     """获取 MOM 系统用户列表，默认只返回 IRIS 部门"""
     db = MomSessionLocal()
     try:
-        base_sql = """
-            SELECT id, username,
-                   SPLIT_PART(username, '/', 1) AS full_name,
-                   COALESCE(department, '') AS department
-            FROM sys_user
-            WHERE department = :dept
-        """
-        params = {"dept": dept, "lim": limit}
-        if keyword.strip():
-            sql = text(base_sql + " AND username ILIKE :kw ORDER BY username LIMIT :lim")
-            params["kw"] = f"%{keyword.strip()}%"
-        else:
-            sql = text(base_sql + " ORDER BY username LIMIT :lim")
-        rows = db.execute(sql, params).fetchall()
+        # 尝试按部门过滤；若 sys_user 无 department 列则降级全量查询
+        try:
+            base_sql = """
+                SELECT id, username,
+                       SPLIT_PART(username, '/', 1) AS full_name,
+                       COALESCE(department, '') AS department
+                FROM sys_user
+                WHERE department = :dept
+            """
+            params = {"dept": dept, "lim": limit}
+            if keyword.strip():
+                sql = text(base_sql + " AND username ILIKE :kw ORDER BY username LIMIT :lim")
+                params["kw"] = f"%{keyword.strip()}%"
+            else:
+                sql = text(base_sql + " ORDER BY username LIMIT :lim")
+            rows = db.execute(sql, params).fetchall()
+        except Exception:
+            # 降级：不使用 department 列过滤
+            fallback_sql = """
+                SELECT id, username,
+                       SPLIT_PART(username, '/', 1) AS full_name,
+                       '' AS department
+                FROM sys_user
+            """
+            params = {"lim": limit}
+            if keyword.strip():
+                sql = text(fallback_sql + " WHERE username ILIKE :kw ORDER BY username LIMIT :lim")
+                params["kw"] = f"%{keyword.strip()}%"
+            else:
+                sql = text(fallback_sql + " ORDER BY username LIMIT :lim")
+            rows = db.execute(sql, params).fetchall()
 
         return [
             UserOption(
diff --git a/track-uniapp/src/pages/scan/detail.vue b/track-uniapp/src/pages/scan/detail.vue
index fef34e8..d40dbd9 100644
--- a/track-uniapp/src/pages/scan/detail.vue
+++ b/track-uniapp/src/pages/scan/detail.vue
@@ -198,7 +198,7 @@ export default {
     openEditProduct() { this.editForm = { order_no: this.product.order_no || "", external_serial: this.product.external_serial || "" }; this.editProductVisible = true; },
     async doEditProduct() { this.editSaving = true; try { this.product = await patch(`/products/${this.product.id}`, { order_no: this.editForm.order_no.trim(), external_serial: this.editForm.external_serial.trim() }); uni.showToast({ title: "已保存", icon: "success" }); this.editProductVisible = false; } catch {} finally { this.editSaving = false; } },
 
-    async loadUsers() { try { const res = await get("/users/", { limit: 200, dept: "IRIS" }); this.users = (res || []).filter(u => u.department === "IRIS" || !u.department); this.userOptions = this.users.map(u => ({ id: u.username || u.id, name: u.full_name || u.username })); } catch {} },
+    async loadUsers() { try { const res = await get("/users/", { limit: 200, dept: "IRIS" }); this.users = (res || []).filter(u => u.department === "IRIS"); this.userOptions = this.users.map(u => ({ id: u.username || u.id, name: u.full_name || u.username })); } catch {} },
     loadCurrentUser() { try { let user = uni.getStorageSync("user"); if (typeof user === "string" && user) { try { user = JSON.parse(user); } catch (e) { user = null; } } if (user && typeof user === "object") { this.currentUser = user; this.currentUserId = String(user.id || ""); this.currentUsername = user.username || ""; } } catch {} },
 
     onTaskNameChange(e) { const idx = e.detail.value; this.firstForm.taskNameIdx = idx; this.firstForm.task_name = TASK_NAME_OPTIONS[idx]; },