diff --git a/inventory-backend/app/services/inventory_task.py b/inventory-backend/app/services/inventory_task.py
index c2544bc..ee9c400 100644
--- a/inventory-backend/app/services/inventory_task.py
+++ b/inventory-backend/app/services/inventory_task.py
@@ -101,6 +101,8 @@ class InventoryWarningService:
 
         total_red = 0
         total_yellow = 0
+        total_red_cascaded = 0  # 红色顺延到黄色
+        total_yellow_cascaded = 0  # 黄色顺延到红色
         sent_red = False
         sent_yellow = False
         processed_settings = []
@@ -121,7 +123,18 @@ class InventoryWarningService:
             if red_th is not None and inv <= red_th:
                 total_red += 1
                 red_emails = InventoryWarningService._parse_emails(setting.red_emails)
-                if red_emails:
+                emails_to_use = red_emails
+                use_yellow_channel = False  # 是否走黄色通道（顺延时为 True）
+                if not emails_to_use:
+                    # ★ 红色预警但无 red_emails，顺延使用 yellow_emails ★
+                    emails_to_use = InventoryWarningService._parse_emails(setting.yellow_emails)
+                    if emails_to_use:
+                        total_yellow += 1
+                        total_red_cascaded += 1
+                        use_yellow_channel = True
+                        print(f"[InventoryWarning] 物料「{name}」红色预警触发，但 red_emails 为空，顺延使用 yellow_emails 发黄色预警")
+
+                if emails_to_use:
                     processed_settings.append(setting)
                     row = {
                         'name': name,
@@ -129,10 +142,14 @@ class InventoryWarningService:
                         'qty': round(inv, 2),
                         'threshold': round(red_th, 2),
                     }
-                    for email in red_emails:
-                        red_rows_by_email[email].append(row)
+                    if use_yellow_channel:
+                        for email in emails_to_use:
+                            yellow_rows_by_email[email].append(row)
+                    else:
+                        for email in emails_to_use:
+                            red_rows_by_email[email].append(row)
                 else:
-                    print(f"[InventoryWarning] 物料「{name}」红单跳过：无 red_emails 配置")
+                    print(f"[InventoryWarning] 物料「{name}」红单跳过：无 red_emails 且 yellow_emails 也为空")
 
             # ★ 黄色预警：red_threshold < 库存 <= yellow_threshold，走 setting.yellow_emails ★
             elif (
@@ -141,7 +158,18 @@ class InventoryWarningService:
             ):
                 total_yellow += 1
                 yellow_emails = InventoryWarningService._parse_emails(setting.yellow_emails)
-                if yellow_emails:
+                emails_to_use = yellow_emails
+                use_red_channel = False  # 是否走红色通道（顺延时为 True）
+                if not emails_to_use:
+                    # ★ 黄色预警但无 yellow_emails，顺延使用 red_emails ★
+                    emails_to_use = InventoryWarningService._parse_emails(setting.red_emails)
+                    if emails_to_use:
+                        total_red += 1
+                        total_yellow_cascaded += 1
+                        use_red_channel = True
+                        print(f"[InventoryWarning] 物料「{name}」黄色预警触发，但 yellow_emails 为空，顺延使用 red_emails 发红色预警")
+
+                if emails_to_use:
                     processed_settings.append(setting)
                     row = {
                         'name': name,
@@ -149,10 +177,14 @@ class InventoryWarningService:
                         'qty': round(inv, 2),
                         'threshold': round(yellow_th, 2),
                     }
-                    for email in yellow_emails:
-                        yellow_rows_by_email[email].append(row)
+                    if use_red_channel:
+                        for email in emails_to_use:
+                            red_rows_by_email[email].append(row)
+                    else:
+                        for email in emails_to_use:
+                            yellow_rows_by_email[email].append(row)
                 else:
-                    print(f"[InventoryWarning] 物料「{name}」黄单跳过：无 yellow_emails 配置")
+                    print(f"[InventoryWarning] 物料「{name}」黄单跳过：无 yellow_emails 且 red_emails 也为空")
             else:
                 continue
 
@@ -193,6 +225,8 @@ class InventoryWarningService:
         return {
             'red_count': total_red,
             'yellow_count': total_yellow,
+            'red_cascaded_count': total_red_cascaded,
+            'yellow_cascaded_count': total_yellow_cascaded,
             'red_sent': sent_red,
             'yellow_sent': sent_yellow,
             'timestamp': now.strftime('%Y-%m-%d %H:%M:%S')
diff --git a/inventory-web/src/views/material/list.vue b/inventory-web/src/views/material/list.vue
index 02b5c5b..65d80fb 100644
--- a/inventory-web/src/views/material/list.vue
+++ b/inventory-web/src/views/material/list.vue
@@ -302,6 +302,22 @@
             </el-tag>
           </template>
         </el-table-column>
+        <el-table-column v-if="userStore.hasPermission('material_list:view_warning')" label="预警状态" width="120" align="center">
+          <template #default="{ row }">
+            <template v-if="row.warningStatus === 2">
+              <el-tag type="danger" size="small">红色预警</el-tag>
+              <div style="font-size: 11px; color: #999;">阈值: {{ row.warningRed }}</div>
+            </template>
+            <template v-else-if="row.warningStatus === 1">
+              <el-tag type="warning" size="small">黄色预警</el-tag>
+              <div style="font-size: 11px; color: #999;">阈值: {{ row.warningYellow }}</div>
+            </template>
+            <template v-else-if="row.warningEnabled">
+              <el-tag type="success" size="small">已配置</el-tag>
+            </template>
+            <span v-else style="color: #c0c4cc;">-</span>
+          </template>
+        </el-table-column>
         <el-table-column v-if="userStore.hasPermission('material_list:operation')" label="操作" width="280" fixed="right" align="center">
           <template #default="scope">
             <el-button v-if="userStore.hasPermission('material_list:operation')" link type="primary" size="small" @click="handleEdit(scope.row)">编辑</el-button>