diff --git a/src/renderer/App.tsx b/src/renderer/App.tsx
index 1f7544d..c67f3f3 100644
--- a/src/renderer/App.tsx
+++ b/src/renderer/App.tsx
@@ -3,6 +3,7 @@ import { Provider } from '../shared/types'
 import ProviderList from './components/ProviderList'
 import AddProviderModal from './components/AddProviderModal'
 import EditProviderModal from './components/EditProviderModal'
+import { ConfirmDialog } from './components/ConfirmDialog'
 import './App.css'
 
 function App() {
@@ -13,6 +14,7 @@ function App() {
   const [editingProviderId, setEditingProviderId] = useState<string | null>(null)
   const [notification, setNotification] = useState<{ message: string; type: 'success' | 'error' } | null>(null)
   const [isNotificationVisible, setIsNotificationVisible] = useState(false)
+  const [confirmDialog, setConfirmDialog] = useState<{ isOpen: boolean; title: string; message: string; onConfirm: () => void } | null>(null)
   const timeoutRef = useRef<NodeJS.Timeout | null>(null)
 
   // 设置通知的辅助函数
@@ -82,10 +84,18 @@ function App() {
   }
 
   const handleDeleteProvider = async (id: string) => {
-    if (confirm('确定要删除这个供应商吗？')) {
-      await window.electronAPI.deleteProvider(id)
-      await loadProviders()
-    }
+    const provider = providers[id]
+    setConfirmDialog({
+      isOpen: true,
+      title: '删除供应商',
+      message: `确定要删除供应商 "${provider?.name}" 吗？此操作无法撤销。`,
+      onConfirm: async () => {
+        await window.electronAPI.deleteProvider(id)
+        await loadProviders()
+        setConfirmDialog(null)
+        showNotification('供应商删除成功', 'success')
+      }
+    })
   }
 
   const handleSwitchProvider = async (id: string) => {
@@ -180,6 +190,16 @@ function App() {
           onClose={() => setEditingProviderId(null)}
         />
       )}
+
+      {confirmDialog && (
+        <ConfirmDialog
+          isOpen={confirmDialog.isOpen}
+          title={confirmDialog.title}
+          message={confirmDialog.message}
+          onConfirm={confirmDialog.onConfirm}
+          onCancel={() => setConfirmDialog(null)}
+        />
+      )}
     </div>
   )
 }
diff --git a/src/renderer/components/AddProviderModal.css b/src/renderer/components/AddProviderModal.css
index 4c10017..0ecea99 100644
--- a/src/renderer/components/AddProviderModal.css
+++ b/src/renderer/components/AddProviderModal.css
@@ -29,6 +29,16 @@
   color: #2c3e50;
 }
 
+.error-message {
+  background: #fee;
+  color: #c33;
+  padding: 0.75rem;
+  border-radius: 4px;
+  margin-bottom: 1rem;
+  border: 1px solid #fcc;
+  font-size: 0.9rem;
+}
+
 .presets {
   margin-bottom: 1.5rem;
   padding-bottom: 1.5rem;
diff --git a/src/renderer/components/AddProviderModal.tsx b/src/renderer/components/AddProviderModal.tsx
index f466bcc..4eff714 100644
--- a/src/renderer/components/AddProviderModal.tsx
+++ b/src/renderer/components/AddProviderModal.tsx
@@ -16,12 +16,14 @@ const AddProviderModal: React.FC<AddProviderModalProps> = ({ onAdd, onClose }) =
     websiteUrl: ''
   })
   const [showPassword, setShowPassword] = useState(false)
+  const [error, setError] = useState('')
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault()
+    setError('')
     
     if (!formData.name || !formData.apiUrl || !formData.apiKey) {
-      alert('请填写所有必填字段')
+      setError('请填写所有必填字段')
       return
     }
 
@@ -89,6 +91,12 @@ const AddProviderModal: React.FC<AddProviderModalProps> = ({ onAdd, onClose }) =
       <div className="modal-content" onClick={(e) => e.stopPropagation()}>
         <h2>添加新供应商</h2>
         
+        {error && (
+          <div className="error-message">
+            {error}
+          </div>
+        )}
+        
         <div className="presets">
           <label>快速选择：</label>
           <div className="preset-buttons">
diff --git a/src/renderer/components/ConfirmDialog.css b/src/renderer/components/ConfirmDialog.css
new file mode 100644
index 0000000..814dc27
--- /dev/null
+++ b/src/renderer/components/ConfirmDialog.css
@@ -0,0 +1,105 @@
+.confirm-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+  backdrop-filter: blur(2px);
+}
+
+.confirm-dialog {
+  background: white;
+  border-radius: 8px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
+  min-width: 300px;
+  max-width: 400px;
+  animation: confirmSlideIn 0.2s ease-out;
+}
+
+@keyframes confirmSlideIn {
+  from {
+    opacity: 0;
+    transform: scale(0.9) translateY(-20px);
+  }
+  to {
+    opacity: 1;
+    transform: scale(1) translateY(0);
+  }
+}
+
+.confirm-header {
+  padding: 1.5rem 1.5rem 1rem;
+  border-bottom: 1px solid #eee;
+}
+
+.confirm-header h3 {
+  margin: 0;
+  font-size: 1.1rem;
+  color: #333;
+  font-weight: 600;
+}
+
+.confirm-content {
+  padding: 1rem 1.5rem;
+}
+
+.confirm-content p {
+  margin: 0;
+  color: #666;
+  line-height: 1.5;
+}
+
+.confirm-actions {
+  display: flex;
+  gap: 0.75rem;
+  padding: 1rem 1.5rem 1.5rem;
+  justify-content: flex-end;
+}
+
+.confirm-btn {
+  padding: 0.5rem 1rem;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.9rem;
+  font-weight: 500;
+  transition: background-color 0.2s, transform 0.1s;
+  min-width: 70px;
+}
+
+.confirm-btn:hover {
+  transform: translateY(-1px);
+}
+
+.confirm-btn:active {
+  transform: translateY(0);
+}
+
+.cancel-btn {
+  background: #f8f9fa;
+  color: #6c757d;
+  border: 1px solid #dee2e6;
+}
+
+.cancel-btn:hover {
+  background: #e9ecef;
+}
+
+.confirm-btn-primary {
+  background: #dc3545;
+  color: white;
+}
+
+.confirm-btn-primary:hover {
+  background: #c82333;
+}
+
+.confirm-btn:focus {
+  outline: 2px solid #007bff;
+  outline-offset: 2px;
+}
\ No newline at end of file
diff --git a/src/renderer/components/ConfirmDialog.tsx b/src/renderer/components/ConfirmDialog.tsx
new file mode 100644
index 0000000..765c0b8
--- /dev/null
+++ b/src/renderer/components/ConfirmDialog.tsx
@@ -0,0 +1,52 @@
+import React from 'react';
+import './ConfirmDialog.css';
+
+interface ConfirmDialogProps {
+  isOpen: boolean;
+  title: string;
+  message: string;
+  confirmText?: string;
+  cancelText?: string;
+  onConfirm: () => void;
+  onCancel: () => void;
+}
+
+export const ConfirmDialog: React.FC<ConfirmDialogProps> = ({
+  isOpen,
+  title,
+  message,
+  confirmText = '确定',
+  cancelText = '取消',
+  onConfirm,
+  onCancel
+}) => {
+  if (!isOpen) return null;
+
+  return (
+    <div className="confirm-overlay">
+      <div className="confirm-dialog">
+        <div className="confirm-header">
+          <h3>{title}</h3>
+        </div>
+        <div className="confirm-content">
+          <p>{message}</p>
+        </div>
+        <div className="confirm-actions">
+          <button 
+            className="confirm-btn cancel-btn" 
+            onClick={onCancel}
+            autoFocus
+          >
+            {cancelText}
+          </button>
+          <button 
+            className="confirm-btn confirm-btn-primary" 
+            onClick={onConfirm}
+          >
+            {confirmText}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+};
\ No newline at end of file
diff --git a/src/renderer/components/EditProviderModal.tsx b/src/renderer/components/EditProviderModal.tsx
index bd56aae..5a52024 100644
--- a/src/renderer/components/EditProviderModal.tsx
+++ b/src/renderer/components/EditProviderModal.tsx
@@ -17,6 +17,7 @@ const EditProviderModal: React.FC<EditProviderModalProps> = ({ provider, onSave,
     websiteUrl: provider.websiteUrl || ''
   })
   const [showPassword, setShowPassword] = useState(false)
+  const [error, setError] = useState('')
 
   useEffect(() => {
     setFormData({
@@ -29,9 +30,10 @@ const EditProviderModal: React.FC<EditProviderModalProps> = ({ provider, onSave,
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault()
+    setError('')
     
     if (!formData.name || !formData.apiUrl || !formData.apiKey) {
-      alert('请填写所有必填字段')
+      setError('请填写所有必填字段')
       return
     }
 
@@ -79,6 +81,12 @@ const EditProviderModal: React.FC<EditProviderModalProps> = ({ provider, onSave,
       <div className="modal-content" onClick={(e) => e.stopPropagation()}>
         <h2>编辑供应商</h2>
 
+        {error && (
+          <div className="error-message">
+            {error}
+          </div>
+        )}
+
         <form onSubmit={handleSubmit}>
           <div className="form-group">
             <label htmlFor="name">供应商名称 *</label>