diff --git a/app/(admin)/settings/admin-settings-client.tsx b/app/(admin)/settings/admin-settings-client.tsx
index 124e8cd..de6122b 100644
--- a/app/(admin)/settings/admin-settings-client.tsx
+++ b/app/(admin)/settings/admin-settings-client.tsx
@@ -3906,15 +3906,15 @@ export function AdminSettingsClient() {
               <div className="space-y-2">
                 <Label htmlFor="sceneFusionModel">生图模型</Label>
                 <Select
-                  value={sceneFusionConfig.modelId}
-                  onValueChange={(value) => setSceneFusionConfig({ ...sceneFusionConfig, modelId: value })}
+                  value={sceneFusionConfig.modelId || "auto"}
+                  onValueChange={(value) => setSceneFusionConfig({ ...sceneFusionConfig, modelId: value === "auto" ? "" : value })}
                   disabled={!sceneFusionConfig.enabled}
                 >
                   <SelectTrigger>
                     <SelectValue placeholder="选择生图模型（留空使用默认阿里模型）" />
                   </SelectTrigger>
                   <SelectContent>
-                    <SelectItem value="">自动选择（默认阿里生图）</SelectItem>
+                    <SelectItem value="auto">自动选择（默认阿里生图）</SelectItem>
                     {(modelsData?.models || [])
                       .filter((m: AiModel) => {
                         // 过滤出支持图片生成/编辑的模型
@@ -3939,7 +3939,7 @@ export function AdminSettingsClient() {
                       const imageProviderTypes = ["alibaba-image", "gemini-image", "gemini", "volcano-vision"];
                       return provider && imageProviderTypes.includes(provider.type);
                     }).length === 0 && (
-                      <SelectItem value="" disabled>
+                      <SelectItem value="no-model" disabled>
                         暂无可用的生图模型，请先配置生图供应商
                       </SelectItem>
                     )}