diff --git a/frontend/src/components/ui/select.tsx b/frontend/src/components/ui/select.tsx
index b830cd52..bc4fe280 100644
--- a/frontend/src/components/ui/select.tsx
+++ b/frontend/src/components/ui/select.tsx
@@ -183,6 +183,40 @@ const SelectSeparator = React.forwardRef<
 ))
 SelectSeparator.displayName = SelectPrimitive.Separator.displayName
 
+// ClearableSelect - 支持清空功能的Select包装组件
+interface ClearableSelectProps {
+  value?: string | number | null;
+  onValueChange?: (value: string | null) => void;
+  placeholder?: string;
+  disabled?: boolean;
+  children: React.ReactNode;
+  defaultValue?: string;
+  open?: boolean;
+  onOpenChange?: (open: boolean) => void;
+}
+
+const ClearableSelect = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Root>,
+  ClearableSelectProps
+>(({ value, onValueChange, children, ...props }, ref) => {
+  const hasValue = value !== undefined && value !== null && value !== '';
+  const selectProps = hasValue ? { value: value.toString() } : {};
+
+  return (
+    <Select
+      key={hasValue ? value : 'empty'}
+      {...selectProps}
+      onValueChange={(val) => {
+        onValueChange?.(val || null);
+      }}
+      {...props}
+    >
+      {children}
+    </Select>
+  );
+});
+ClearableSelect.displayName = "ClearableSelect";
+
 export {
   Select,
   SelectGroup,
@@ -194,4 +228,5 @@ export {
   SelectSeparator,
   SelectScrollUpButton,
   SelectScrollDownButton,
+  ClearableSelect,
 }
diff --git a/frontend/src/pages/Dashboard/components/EnvironmentTabs.tsx b/frontend/src/pages/Dashboard/components/EnvironmentTabs.tsx
index 1121189d..8ea716ea 100644
--- a/frontend/src/pages/Dashboard/components/EnvironmentTabs.tsx
+++ b/frontend/src/pages/Dashboard/components/EnvironmentTabs.tsx
@@ -104,7 +104,7 @@ export const EnvironmentTabs: React.FC<EnvironmentTabsProps> = React.memo(({
                 </CardContent>
               </Card>
             ) : (
-              <div className="grid grid-cols-6 gap-3">
+              <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 xl:grid-cols-4 gap-4">
                 {env.applications.map((app) => (
                   <ApplicationCard
                     key={app.teamApplicationId}
diff --git a/frontend/src/pages/Dashboard/index.tsx b/frontend/src/pages/Dashboard/index.tsx
index cc946564..ba03aff4 100644
--- a/frontend/src/pages/Dashboard/index.tsx
+++ b/frontend/src/pages/Dashboard/index.tsx
@@ -20,8 +20,8 @@ const LoadingState = () => (
         {/* 卡片骨架 */}
         <div className="space-y-4">
             <div className="h-12 w-full bg-slate-100 rounded animate-pulse" />
-            <div className="grid grid-cols-6 gap-3">
-                {[1, 2, 3, 4, 5, 6].map((i) => (
+            <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 xl:grid-cols-4 gap-4">
+                {[1, 2, 3, 4].map((i) => (
                     <div key={i} className="h-48 bg-slate-100 rounded-lg animate-pulse" />
                 ))}
             </div>
diff --git a/frontend/src/pages/Deploy/Application/List/components/ApplicationModal.tsx b/frontend/src/pages/Deploy/Application/List/components/ApplicationModal.tsx
index 9e9d6685..14bbf3ba 100644
--- a/frontend/src/pages/Deploy/Application/List/components/ApplicationModal.tsx
+++ b/frontend/src/pages/Deploy/Application/List/components/ApplicationModal.tsx
@@ -10,6 +10,7 @@ import {
     DialogHeader,
     DialogTitle,
     DialogFooter,
+    DialogBody,
 } from "@/components/ui/dialog";
 import {Button} from "@/components/ui/button";
 import {
@@ -142,8 +143,8 @@ const ApplicationModal: React.FC<ApplicationModalProps> = ({
                     <DialogTitle>{isEdit ? '编辑' : '新建'}应用</DialogTitle>
                 </DialogHeader>
                 <Form {...form}>
-                    <form className="space-y-6">
-                        <div className="px-6">
+                    <form className="flex flex-col flex-1 min-h-0">
+                        <DialogBody>
                             <div className="space-y-4">
                                 <div className="grid grid-cols-3 gap-4">
                                     <FormField
@@ -293,8 +294,8 @@ const ApplicationModal: React.FC<ApplicationModalProps> = ({
                                 />
 
                             </div>
-                        </div>
-                        <DialogFooter className="px-6 py-4 border-t mt-0">
+                        </DialogBody>
+                        <DialogFooter>
                             <Button type="button" variant="outline" onClick={onCancel}>
                                 取消
                             </Button>
diff --git a/frontend/src/pages/Deploy/NotificationChannel/List/components/NotificationChannelDialog.tsx b/frontend/src/pages/Deploy/NotificationChannel/List/components/NotificationChannelDialog.tsx
index 08918276..b3572d32 100644
--- a/frontend/src/pages/Deploy/NotificationChannel/List/components/NotificationChannelDialog.tsx
+++ b/frontend/src/pages/Deploy/NotificationChannel/List/components/NotificationChannelDialog.tsx
@@ -8,6 +8,7 @@ import {
   DialogHeader,
   DialogTitle,
   DialogBody,
+  DialogFooter,
   DialogLoading,
 } from '@/components/ui/dialog';
 import { Button } from '@/components/ui/button';
@@ -266,7 +267,7 @@ const NotificationChannelDialog: React.FC<NotificationChannelDialogProps> = ({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="max-w-2xl max-h-[90vh] overflow-y-auto">
+      <DialogContent className="max-w-2xl">
         <DialogHeader>
           <DialogTitle>
             {mode === 'edit' ? '编辑' : '创建'}通知渠道
@@ -277,7 +278,7 @@ const NotificationChannelDialog: React.FC<NotificationChannelDialogProps> = ({
           {loading ? (
             <DialogLoading />
           ) : (
-            <form onSubmit={handleSubmit(onSubmit)} className="space-y-4">
+            <form onSubmit={handleSubmit(onSubmit)} id="notification-channel-form" className="space-y-4">
               {/* 渠道名称 */}
               <div className="space-y-2">
                 <Label htmlFor="name">
@@ -622,20 +623,21 @@ const NotificationChannelDialog: React.FC<NotificationChannelDialogProps> = ({
                   <p className="text-sm text-destructive">{errors.description.message}</p>
                 )}
               </div>
-
-              {/* Submit buttons at the bottom of form */}
-              <div className="flex justify-end gap-2 pt-4 border-t">
-                <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
-                  取消
-                </Button>
-                <Button type="submit" disabled={saving}>
-                  {saving && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
-                  {mode === 'edit' ? '保存' : '创建'}
-                </Button>
-              </div>
             </form>
           )}
         </DialogBody>
+        
+        {!loading && (
+          <DialogFooter>
+            <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
+              取消
+            </Button>
+            <Button type="submit" form="notification-channel-form" disabled={saving}>
+              {saving && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
+              {mode === 'edit' ? '保存' : '创建'}
+            </Button>
+          </DialogFooter>
+        )}
       </DialogContent>
     </Dialog>
   );
diff --git a/frontend/src/pages/Deploy/Team/List/components/NotificationConfigDialog.tsx b/frontend/src/pages/Deploy/Team/List/components/NotificationConfigDialog.tsx
index 28f9640d..8fb28db1 100644
--- a/frontend/src/pages/Deploy/Team/List/components/NotificationConfigDialog.tsx
+++ b/frontend/src/pages/Deploy/Team/List/components/NotificationConfigDialog.tsx
@@ -22,7 +22,7 @@ import {
   FormMessage,
 } from '@/components/ui/form';
 import {
-  Select,
+  ClearableSelect,
   SelectContent,
   SelectItem,
   SelectTrigger,
@@ -51,9 +51,12 @@ const formSchema = z
   })
   .refine(
     (data) => {
-      // 如果启用了部署通知或构建通知，则通知渠道必填
+      // 如果启用了任意通知类型，则通知渠道必填
       if (
-        (data.notificationConfig?.deployNotificationEnabled ||data.notificationConfig?.buildNotificationEnabled) && !data.notificationConfig?.notificationChannelId
+        (data.notificationConfig?.deployNotificationEnabled ||
+          data.notificationConfig?.buildNotificationEnabled ||
+          data.notificationConfig?.buildFailureFileEnabled) &&
+        !data.notificationConfig?.notificationChannelId
       ) {
         return false;
       }
@@ -138,6 +141,7 @@ export const NotificationConfigDialog: React.FC<
             notificationChannelId: undefined,
             deployNotificationEnabled: false,
             buildNotificationEnabled: false,
+            buildFailureFileEnabled: false,
           },
         });
       }
@@ -171,6 +175,9 @@ export const NotificationConfigDialog: React.FC<
   }, [open, teamId, environmentId]);
 
   const handleSubmit = async (data: FormData) => {
+    console.log('表单提交数据:', data);
+    console.log('当前配置:', currentConfig);
+    
     if (!configId || !currentConfig) {
       toast({
         title: '错误',
@@ -182,34 +189,31 @@ export const NotificationConfigDialog: React.FC<
 
     setSubmitting(true);
     try {
-      // 提交完整的环境配置，只更新通知部分
-      const payload: any = {
+      // 构建通知配置对象
+      let notificationConfig = undefined;
+      if (data.notificationConfig?.notificationChannelId) {
+        notificationConfig = {
+          id: data.notificationConfig.id,
+          notificationChannelId: data.notificationConfig.notificationChannelId,
+          deployNotificationEnabled: data.notificationConfig.deployNotificationEnabled ?? false,
+          buildNotificationEnabled: data.notificationConfig.buildNotificationEnabled ?? false,
+          buildFailureFileEnabled: data.notificationConfig.buildFailureFileEnabled ?? false,
+        };
+      }
+      
+      // 构建完整的提交数据（保留原有配置，只更新通知部分）
+      const payload = {
         teamId: currentConfig.teamId,
         environmentId: currentConfig.environmentId,
         approvalRequired: currentConfig.approvalRequired,
         approverUserIds: currentConfig.approverUserIds || [],
         requireCodeReview: currentConfig.requireCodeReview,
         remark: currentConfig.remark,
-        // 更新通知配置
-        notificationConfig:
-          data.notificationConfig &&
-          (data.notificationConfig.deployNotificationEnabled ||
-            data.notificationConfig.buildNotificationEnabled ||
-            data.notificationConfig.buildFailureFileEnabled)
-            ? {
-                id: data.notificationConfig.id,
-                notificationChannelId:
-                  data.notificationConfig.notificationChannelId,
-                deployNotificationEnabled:
-                  data.notificationConfig.deployNotificationEnabled,
-                buildNotificationEnabled:
-                  data.notificationConfig.buildNotificationEnabled,
-                buildFailureFileEnabled:
-                  data.notificationConfig.buildFailureFileEnabled,
-              }
-            : undefined,
+        notificationConfig,
       };
 
+      console.log('最终提交的 payload:', payload);
+
       await updateTeamEnvironmentConfig(configId, payload);
 
       toast({
@@ -257,10 +261,10 @@ export const NotificationConfigDialog: React.FC<
                   render={({ field }) => (
                     <FormItem>
                       <FormLabel>通知渠道</FormLabel>
-                      <Select
-                        value={field.value?.toString() || ''}
+                      <ClearableSelect
+                        value={field.value}
                         onValueChange={(value) =>
-                          field.onChange(value ? Number(value) : undefined)
+                          field.onChange(value ? Number(value) : null)
                         }
                         disabled={loadingChannels}
                       >
@@ -268,7 +272,9 @@ export const NotificationConfigDialog: React.FC<
                           <SelectTrigger
                             clearable
                             hasValue={!!field.value}
-                            onClear={() => field.onChange(undefined)}
+                            onClear={() => {
+                              field.onChange(null);
+                            }}
                           >
                             <SelectValue
                               placeholder={
@@ -289,7 +295,7 @@ export const NotificationConfigDialog: React.FC<
                             </SelectItem>
                           ))}
                         </SelectContent>
-                      </Select>
+                      </ClearableSelect>
                       <FormMessage />
                       <div className="text-sm text-muted-foreground">
                         选择通知渠道后，启用下方的通知类型
@@ -342,7 +348,7 @@ export const NotificationConfigDialog: React.FC<
                   )}
                 />
 
-                {/* 构建通知 */}
+                {/* 失败日志 */}
                 <FormField
                   control={form.control}
                   name="notificationConfig.buildFailureFileEnabled"
diff --git a/frontend/src/pages/Workflow/Definition/List/components/EditModal.tsx b/frontend/src/pages/Workflow/Definition/List/components/EditModal.tsx
index 4ae9aae5..5471ef0f 100644
--- a/frontend/src/pages/Workflow/Definition/List/components/EditModal.tsx
+++ b/frontend/src/pages/Workflow/Definition/List/components/EditModal.tsx
@@ -5,6 +5,7 @@ import {
     DialogHeader,
     DialogTitle,
     DialogFooter,
+    DialogBody,
 } from '@/components/ui/dialog';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -199,7 +200,7 @@ const EditModal: React.FC<EditModalProps> = ({ visible, onClose, onSuccess, reco
                 <DialogHeader>
                     <DialogTitle>{isEdit ? '编辑流程' : '新建流程'}</DialogTitle>
                 </DialogHeader>
-                <div className="grid gap-6 px-6 py-4">
+                <DialogBody className="grid gap-6">
                     {/* 流程分类 */}
                     <div className="space-y-2">
                         <Label htmlFor="categoryId">
@@ -325,7 +326,7 @@ const EditModal: React.FC<EditModalProps> = ({ visible, onClose, onSuccess, reco
                         />
                     </div>
 
-                </div>
+                </DialogBody>
 
                 <DialogFooter>
                     <Button variant="outline" onClick={handleClose} disabled={submitting}>