diff --git a/src/components/SettingsModal.tsx b/src/components/SettingsModal.tsx
index 1942c8a..19f6daa 100644
--- a/src/components/SettingsModal.tsx
+++ b/src/components/SettingsModal.tsx
@@ -13,6 +13,7 @@ export const SettingsModal: React.FC<SettingsModalProps> = ({ open, onOpenChange
   const [geminiApiKey, setGeminiApiKey] = useState('');
   const [uploadApiUrl, setUploadApiUrl] = useState('');
   const [uploadAssetUrl, setUploadAssetUrl] = useState('');
+  const [modelName, setModelName] = useState('');
 
   // 组件挂载时从localStorage加载设置
   useEffect(() => {
@@ -21,11 +22,13 @@ export const SettingsModal: React.FC<SettingsModalProps> = ({ open, onOpenChange
       const savedGeminiApiKey = localStorage.getItem('VITE_GEMINI_API_KEY') || '';
       const savedUploadApiUrl = localStorage.getItem('VITE_UPLOAD_API') || '';
       const savedUploadAssetUrl = localStorage.getItem('VITE_UPLOAD_ASSET_URL') || '';
+      const savedModelName = localStorage.getItem('VITE_GEMINI_MODEL_NAME') || 'gemini-2.5-flash-image-preview';
       
       setAccessToken(savedAccessToken);
       setGeminiApiKey(savedGeminiApiKey);
       setUploadApiUrl(savedUploadApiUrl);
       setUploadAssetUrl(savedUploadAssetUrl);
+      setModelName(savedModelName);
     }
   }, [open]);
 
@@ -55,6 +58,12 @@ export const SettingsModal: React.FC<SettingsModalProps> = ({ open, onOpenChange
       localStorage.removeItem('VITE_UPLOAD_ASSET_URL');
     }
     
+    if (modelName) {
+      localStorage.setItem('VITE_GEMINI_MODEL_NAME', modelName);
+    } else {
+      localStorage.removeItem('VITE_GEMINI_MODEL_NAME');
+    }
+    
     // 显示保存成功的提示
     alert('设置已保存！');
     
@@ -68,11 +77,13 @@ export const SettingsModal: React.FC<SettingsModalProps> = ({ open, onOpenChange
     const defaultGeminiApiKey = import.meta.env.VITE_GEMINI_API_KEY || '';
     const defaultUploadApiUrl = import.meta.env.VITE_UPLOAD_API || '';
     const defaultUploadAssetUrl = import.meta.env.VITE_UPLOAD_ASSET_URL || '';
+    const defaultModelName = import.meta.env.VITE_GEMINI_MODEL_NAME || 'gemini-2.5-flash-image-preview';
     
     setAccessToken(defaultAccessToken);
     setGeminiApiKey(defaultGeminiApiKey);
     setUploadApiUrl(defaultUploadApiUrl);
     setUploadAssetUrl(defaultUploadAssetUrl);
+    setModelName(defaultModelName);
   };
 
   return (
@@ -160,6 +171,23 @@ export const SettingsModal: React.FC<SettingsModalProps> = ({ open, onOpenChange
                   图像上传后返回的URL前缀
                 </p>
               </div>
+              
+              <div className="space-y-2">
+                <label htmlFor="modelName" className="text-sm font-medium text-gray-700">
+                  模型名称
+                </label>
+                <input
+                  id="modelName"
+                  type="text"
+                  value={modelName}
+                  onChange={(e) => setModelName(e.target.value)}
+                  className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-yellow-500 focus:border-transparent"
+                  placeholder="输入模型名称"
+                />
+                <p className="text-xs text-gray-500">
+                  用于AI图像生成和编辑的Google Gemini模型名称
+                </p>
+              </div>
             </div>
             
             <div className="flex justify-between pt-4">
diff --git a/src/services/geminiService.ts b/src/services/geminiService.ts
index 6c960c5..f3c57d8 100644
--- a/src/services/geminiService.ts
+++ b/src/services/geminiService.ts
@@ -3,6 +3,8 @@ import { GoogleGenAI } from '@google/genai'
 // 注意：在生产环境中，这应该通过后端代理处理
 // 优先使用localStorage中的API密钥，如果没有则使用环境变量中的，最后使用默认值
 const API_KEY = localStorage.getItem('VITE_GEMINI_API_KEY') || import.meta.env.VITE_GEMINI_API_KEY || 'demo-key'
+// 优先使用localStorage中的模型名称，如果没有则使用环境变量中的，最后使用默认值
+const MODEL_NAME = localStorage.getItem('VITE_GEMINI_MODEL_NAME') || import.meta.env.VITE_GEMINI_MODEL_NAME || 'gemini-2.5-flash-image-preview'
 const genAI = new GoogleGenAI({ apiKey: API_KEY })
 
 export interface GenerationRequest {
@@ -144,7 +146,7 @@ export class GeminiService {
         contents: Array<{ text: string } | { inlineData: { mimeType: string; data: string } }>
         config?: { httpOptions: { abortSignal: AbortSignal } }
       } = {
-        model: 'gemini-2.5-flash-image-preview',
+        model: MODEL_NAME,
         contents,
       }
 
@@ -383,7 +385,7 @@ export class GeminiService {
         contents: Array<{ text: string } | { inlineData: { mimeType: string; data: string } }>
         config?: { httpOptions: { abortSignal: AbortSignal } }
       } = {
-        model: 'gemini-2.5-flash-image-preview',
+        model: MODEL_NAME,
         contents,
       }
 
@@ -552,7 +554,7 @@ export class GeminiService {
         contents: Array<{ text: string } | { inlineData: { mimeType: string; data: string } }>
         config?: { httpOptions: { abortSignal: AbortSignal } }
       } = {
-        model: 'gemini-2.5-flash-image-preview',
+        model: MODEL_NAME,
         contents: prompt,
       }