diff --git a/src/components/Toast.tsx b/src/components/Toast.tsx
index 093d2d3..8e66ee3 100644
--- a/src/components/Toast.tsx
+++ b/src/components/Toast.tsx
@@ -1,15 +1,21 @@
-import React from 'react';
+import React, { useState, useRef, useEffect } from 'react';
 import { cn } from '../utils/cn';
-import { X } from 'lucide-react';
+import { X, ChevronDown, ChevronUp } from 'lucide-react';
 
 export interface ToastProps {
   id: string;
   message: string;
   type: 'success' | 'error' | 'warning' | 'info';
+  details?: string;
   onClose: (id: string) => void;
+  onHoverChange?: (hovered: boolean) => void;
 }
 
-export const Toast: React.FC<ToastProps> = ({ id, message, type, onClose }) => {
+export const Toast: React.FC<ToastProps> = ({ id, message, type, details, onClose, onHoverChange }) => {
+  const [showDetails, setShowDetails] = useState(false);
+  const [isHovered, setIsHovered] = useState(false);
+  const hoverTimeoutRef = useRef<NodeJS.Timeout | null>(null);
+
   const getTypeStyles = () => {
     switch (type) {
       case 'success':
@@ -25,21 +31,81 @@ export const Toast: React.FC<ToastProps> = ({ id, message, type, onClose }) => {
     }
   };
 
+  const handleMouseEnter = () => {
+    // Clear any existing timeout
+    if (hoverTimeoutRef.current) {
+      clearTimeout(hoverTimeoutRef.current);
+      hoverTimeoutRef.current = null;
+    }
+    
+    setIsHovered(true);
+    onHoverChange?.(true);
+  };
+
+  const handleMouseLeave = () => {
+    // Set a timeout to mark as not hovered after 1 second
+    hoverTimeoutRef.current = setTimeout(() => {
+      setIsHovered(false);
+      onHoverChange?.(false);
+    }, 1000);
+  };
+
+  // Cleanup timeout on unmount
+  useEffect(() => {
+    return () => {
+      if (hoverTimeoutRef.current) {
+        clearTimeout(hoverTimeoutRef.current);
+      }
+    };
+  }, []);
+
   return (
     <div 
       className={cn(
-        'flex items-center justify-between p-4 rounded-lg shadow-lg min-w-[300px] max-w-md transition-all duration-300 transform',
+        'flex flex-col rounded-lg shadow-lg min-w-[300px] max-w-md transition-all duration-300 transform',
         getTypeStyles(),
         'animate-in slide-in-from-top-full duration-300'
       )}
+      onMouseEnter={handleMouseEnter}
+      onMouseLeave={handleMouseLeave}
     >
-      <span className="text-sm font-medium">{message}</span>
-      <button 
-        onClick={() => onClose(id)}
-        className="ml-4 hover:bg-black/10 rounded-full p-1 transition-colors"
-      >
-        <X className="h-4 w-4" />
-      </button>
+      <div className="flex items-start justify-between p-4">
+        <div className="flex-1">
+          <span className="text-sm font-medium">{message}</span>
+          {details && (
+            <button 
+              onClick={() => setShowDetails(!showDetails)}
+              className="mt-2 flex items-center text-xs opacity-80 hover:opacity-100 transition-opacity"
+            >
+              {showDetails ? (
+                <>
+                  <ChevronUp className="h-3 w-3 mr-1" />
+                  收起详情
+                </>
+              ) : (
+                <>
+                  <ChevronDown className="h-3 w-3 mr-1" />
+                  展开详情
+                </>
+              )}
+            </button>
+          )}
+        </div>
+        <button 
+          onClick={() => onClose(id)}
+          className="ml-4 hover:bg-black/10 rounded-full p-1 transition-colors"
+        >
+          <X className="h-4 w-4" />
+        </button>
+      </div>
+      
+      {details && showDetails && (
+        <div className="px-4 pb-4">
+          <div className="text-xs opacity-90 whitespace-pre-wrap break-words max-h-32 overflow-y-auto">
+            {details}
+          </div>
+        </div>
+      )}
     </div>
   );
 };
\ No newline at end of file
diff --git a/src/components/ToastContext.tsx b/src/components/ToastContext.tsx
index cdb056a..36e5d5c 100644
--- a/src/components/ToastContext.tsx
+++ b/src/components/ToastContext.tsx
@@ -1,4 +1,4 @@
-import React, { createContext, useContext, useReducer, useState, useEffect } from 'react';
+import React, { createContext, useContext, useReducer, useState, useEffect, useRef } from 'react';
 import { Toast } from './Toast';
 
 type ToastType = 'success' | 'error' | 'warning' | 'info';
@@ -8,10 +8,11 @@ export interface ToastMessage {
   message: string;
   type: ToastType;
   duration?: number;
+  details?: string;
 }
 
 export interface ToastContextType {
-  addToast: (message: string, type: ToastType, duration?: number) => void;
+  addToast: (message: string, type: ToastType, duration?: number, details?: string) => void;
   removeToast: (id: string) => void;
 }
 
@@ -19,14 +20,21 @@ const ToastContext = createContext<ToastContextType | undefined>(undefined);
 
 type ToastAction = 
   | { type: 'ADD_TOAST'; payload: ToastMessage }
-  | { type: 'REMOVE_TOAST'; payload: string };
+  | { type: 'REMOVE_TOAST'; payload: string }
+  | { type: 'SET_HOVERED_TOAST', payload: { id: string, hovered: boolean } };
 
 const toastReducer = (state: ToastMessage[], action: ToastAction): ToastMessage[] => {
   switch (action.type) {
     case 'ADD_TOAST':
-      return [...state, action.payload];
+      return [...state, { ...action.payload, hovered: false }];
     case 'REMOVE_TOAST':
       return state.filter(toast => toast.id !== action.payload);
+    case 'SET_HOVERED_TOAST':
+      return state.map(toast => 
+        toast.id === action.payload.id 
+          ? { ...toast, hovered: action.payload.hovered } 
+          : toast
+      );
     default:
       return state;
   }
@@ -34,28 +42,52 @@ const toastReducer = (state: ToastMessage[], action: ToastAction): ToastMessage[
 
 export const ToastProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
   const [toasts, dispatch] = useReducer(toastReducer, []);
+  const hoverTimeouts = useRef<Record<string, NodeJS.Timeout>>({});
 
-  const addToast = (message: string, type: ToastType, duration: number = 5000) => {
+  const addToast = (message: string, type: ToastType, duration: number = 5000, details?: string) => {
     const id = Date.now().toString();
-    dispatch({ type: 'ADD_TOAST', payload: { id, message, type, duration } });
+    dispatch({ type: 'ADD_TOAST', payload: { id, message, type, duration, details } });
   };
 
   const removeToast = (id: string) => {
     dispatch({ type: 'REMOVE_TOAST', payload: id });
   };
 
-  // Auto remove toasts after duration
+  const setToastHovered = (id: string, hovered: boolean) => {
+    dispatch({ type: 'SET_HOVERED_TOAST', payload: { id, hovered } });
+  };
+
+  // Auto remove toasts after duration, but respect hover state
   useEffect(() => {
     const timers = toasts.map(toast => {
-      if (toast.duration === 0) return; // 0 means persistent
-      return setTimeout(() => {
+      // Clear any existing timeout for this toast
+      if (hoverTimeouts.current[toast.id]) {
+        clearTimeout(hoverTimeouts.current[toast.id]);
+        delete hoverTimeouts.current[toast.id];
+      }
+
+      // If toast is hovered, don't set a timer
+      if (toast.hovered) {
+        return null;
+      }
+
+      // If duration is 0, it's persistent
+      if (toast.duration === 0) {
+        return null;
+      }
+
+      // Set timeout to remove toast
+      const timeout = setTimeout(() => {
         removeToast(toast.id);
       }, toast.duration);
+
+      return { id: toast.id, timeout };
     });
 
+    // Cleanup function
     return () => {
       timers.forEach(timer => {
-        if (timer) clearTimeout(timer);
+        if (timer) clearTimeout(timer.timeout);
       });
     };
   }, [toasts]);
@@ -70,7 +102,9 @@ export const ToastProvider: React.FC<{ children: React.ReactNode }> = ({ childre
             id={toast.id}
             message={toast.message}
             type={toast.type}
+            details={toast.details}
             onClose={removeToast}
+            onHoverChange={(hovered) => setToastHovered(toast.id, hovered)}
           />
         ))}
       </div>
diff --git a/src/hooks/useImageGeneration.ts b/src/hooks/useImageGeneration.ts
index 07ed4ea..7bda117 100644
--- a/src/hooks/useImageGeneration.ts
+++ b/src/hooks/useImageGeneration.ts
@@ -71,7 +71,9 @@ export const useImageGeneration = () => {
     },
     onError: (error) => {
       console.error('生成失败:', error);
-      addToast('图像生成失败，请重试', 'error');
+      const errorMessage = error instanceof Error ? error.message : '未知错误';
+      const errorDetails = error instanceof Error ? error.stack : undefined;
+      addToast(`图像生成失败: ${errorMessage}`, 'error', 5000, errorDetails);
       setIsGenerating(false);
     }
   });
@@ -260,7 +262,9 @@ export const useImageEditing = () => {
     },
     onError: (error) => {
       console.error('编辑失败:', error);
-      addToast('图像编辑失败，请重试', 'error');
+      const errorMessage = error instanceof Error ? error.message : '未知错误';
+      const errorDetails = error instanceof Error ? error.stack : undefined;
+      addToast(`图像编辑失败: ${errorMessage}`, 'error', 5000, errorDetails);
       setIsGenerating(false);
     }
   });
diff --git a/src/services/geminiService.ts b/src/services/geminiService.ts
index 3def898..07cbfa2 100644
--- a/src/services/geminiService.ts
+++ b/src/services/geminiService.ts
@@ -73,7 +73,7 @@ export class GeminiService {
       if (error instanceof Error && error.message) {
         throw error;
       }
-      throw new Error('生成图像失败。请重试。');
+      throw new Error(`生成图像失败: ${error instanceof Error ? error.message : '未知错误'}`);
     }
   }
 
@@ -141,7 +141,7 @@ export class GeminiService {
       if (error instanceof Error && error.message) {
         throw error;
       }
-      throw new Error('编辑图像失败。请重试。');
+      throw new Error(`编辑图像失败: ${error instanceof Error ? error.message : '未知错误'}`);
     }
   }
 
@@ -190,7 +190,7 @@ export class GeminiService {
       if (error instanceof Error && error.message) {
         throw error;
       }
-      throw new Error('分割图像失败。请重试。');
+      throw new Error(`分割图像失败: ${error instanceof Error ? error.message : '未知错误'}`);
     }
   }