diff --git a/src/renderer/src/components/base/toast.tsx b/src/renderer/src/components/base/toast.tsx
index f985bdb..cfcc85c 100644
--- a/src/renderer/src/components/base/toast.tsx
+++ b/src/renderer/src/components/base/toast.tsx
@@ -1,6 +1,6 @@
 import React, { useEffect, useState, useCallback } from 'react'
 import { createPortal } from 'react-dom'
-import { IoCheckmark, IoClose, IoAlertSharp, IoInformationSharp } from 'react-icons/io5'
+import { IoCheckmark, IoClose, IoAlertSharp, IoInformationSharp, IoCopy } from 'react-icons/io5'
 
 type ToastType = 'success' | 'error' | 'warning' | 'info'
 
@@ -11,6 +11,7 @@ interface ToastData {
   message: string
   duration?: number
   exiting?: boolean
+  detailed?: boolean
 }
 
 type ToastListener = (toasts: ToastData[]) => void
@@ -38,11 +39,18 @@ const removeToast = (id: string): void => {
   notifyListeners()
 }
 
+const addDetailedToast = (type: ToastType, message: string, title?: string): void => {
+  const id = `${Date.now()}-${Math.random().toString(36).slice(2)}`
+  toasts = [...toasts.slice(-4), { id, type, message, title, duration: 8000, detailed: true }]
+  notifyListeners()
+}
+
 export const toast = {
   success: (message: string, title?: string): void => addToast('success', message, title),
   error: (message: string, title?: string): void => addToast('error', message, title, 1800),
   warning: (message: string, title?: string): void => addToast('warning', message, title),
-  info: (message: string, title?: string): void => addToast('info', message, title)
+  info: (message: string, title?: string): void => addToast('info', message, title),
+  detailedError: (message: string, title?: string): void => addDetailedToast('error', message, title)
 }
 
 const ToastItem: React.FC<{
@@ -50,6 +58,7 @@ const ToastItem: React.FC<{
   onRemove: (id: string) => void
 }> = ({ data, onRemove }) => {
   useEffect(() => {
+    if (data.detailed) return
     const duration = data.duration || 3500
     const exitTimer = setTimeout(() => markExiting(data.id), duration - 200)
     const removeTimer = setTimeout(() => onRemove(data.id), duration)
@@ -57,7 +66,7 @@ const ToastItem: React.FC<{
       clearTimeout(exitTimer)
       clearTimeout(removeTimer)
     }
-  }, [data.id, data.duration, onRemove])
+  }, [data.id, data.duration, data.detailed, onRemove])
 
   const theme: Record<ToastType, { icon: React.ReactNode; bg: string; iconBg: string }> = {
     success: {
@@ -85,6 +94,66 @@ const ToastItem: React.FC<{
   const { icon, iconBg } = theme[data.type]
   const duration = data.duration || 3500
 
+  const handleClose = (): void => {
+    markExiting(data.id)
+    setTimeout(() => onRemove(data.id), 150)
+  }
+
+  const [copied, setCopied] = useState(false)
+  const handleCopy = async (): Promise<void> => {
+    await navigator.clipboard.writeText(data.message)
+    setCopied(true)
+    setTimeout(() => setCopied(false), 1500)
+  }
+
+  if (data.detailed) {
+    return (
+      <div
+        className={`
+          relative flex flex-col gap-3 p-4
+          bg-content1 rounded-xl
+          shadow-xl border border-danger/30
+          ${data.exiting ? 'toast-exit' : 'toast-enter'}
+        `}
+        style={{ width: 480 }}
+      >
+        <div className="flex items-center justify-between overflow-visible">
+          <div className="flex items-center gap-3">
+            <div className={`flex-shrink-0 w-8 h-8 ${iconBg} rounded-full flex items-center justify-center`}>
+              {icon}
+            </div>
+            <p className="text-base font-semibold text-foreground">{data.title || '错误'}</p>
+          </div>
+          <div className="relative" style={{ zIndex: 99999 }}>
+            <button
+              onClick={handleCopy}
+              className="p-2 rounded-lg hover:bg-default-200 transition-colors"
+            >
+              <div className="relative w-4 h-4">
+                <IoCopy className={`absolute inset-0 text-base text-foreground-500 transition-all duration-200 ${copied ? 'opacity-0 scale-50' : 'opacity-100 scale-100'}`} />
+                <IoCheckmark className={`absolute inset-0 text-base text-success transition-all duration-200 ${copied ? 'opacity-100 scale-100' : 'opacity-0 scale-50'}`} />
+              </div>
+            </button>
+            <div className={`absolute top-full mt-1 left-1/2 -translate-x-1/2 px-2 py-1 text-xs text-foreground bg-content2 border border-default-200 rounded shadow-md whitespace-nowrap transition-all duration-200 ${copied ? 'opacity-100 translate-y-0' : 'opacity-0 -translate-y-1 pointer-events-none'}`} style={{ zIndex: 99999 }}>
+              已复制
+            </div>
+          </div>
+        </div>
+        <div className="bg-default-100 rounded-lg p-3 max-h-60 overflow-y-auto scrollbar-thin">
+          <pre className="text-xs text-foreground-600 whitespace-pre-wrap break-words font-mono select-text leading-relaxed">
+            {data.message}
+          </pre>
+        </div>
+        <button
+          onClick={handleClose}
+          className="self-end px-4 py-1.5 text-sm font-medium text-white bg-danger rounded-lg hover:bg-danger/90 transition-colors"
+        >
+          确定
+        </button>
+      </div>
+    )
+  }
+
   return (
     <div
       className={`
@@ -109,10 +178,7 @@ const ToastItem: React.FC<{
         </p>
       </div>
       <button
-        onClick={() => {
-          markExiting(data.id)
-          setTimeout(() => onRemove(data.id), 150)
-        }}
+        onClick={handleClose}
         className="flex-shrink-0 p-1 rounded-full hover:bg-default-200/60 transition-colors"
       >
         <IoClose className="text-base text-foreground-400" />
diff --git a/src/renderer/src/hooks/use-app-config.tsx b/src/renderer/src/hooks/use-app-config.tsx
index 5ad1912..72dff27 100644
--- a/src/renderer/src/hooks/use-app-config.tsx
+++ b/src/renderer/src/hooks/use-app-config.tsx
@@ -1,5 +1,5 @@
 import React, { createContext, useContext, ReactNode } from 'react'
-import { toast } from '@renderer/components/base/toast'
+import { showError } from '@renderer/utils/error-display'
 import useSWR from 'swr'
 import { getAppConfig, patchAppConfig as patch } from '@renderer/utils/ipc'
 
@@ -18,7 +18,7 @@ export const AppConfigProvider: React.FC<{ children: ReactNode }> = ({ children
     try {
       await patch(value)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '更新应用配置失败')
     } finally {
       mutateAppConfig()
     }
diff --git a/src/renderer/src/hooks/use-controled-mihomo-config.tsx b/src/renderer/src/hooks/use-controled-mihomo-config.tsx
index 882b3fe..a89cd30 100644
--- a/src/renderer/src/hooks/use-controled-mihomo-config.tsx
+++ b/src/renderer/src/hooks/use-controled-mihomo-config.tsx
@@ -1,5 +1,5 @@
 import React, { createContext, useContext, ReactNode } from 'react'
-import { toast } from '@renderer/components/base/toast'
+import { showError } from '@renderer/utils/error-display'
 import useSWR from 'swr'
 import { getControledMihomoConfig, patchControledMihomoConfig as patch } from '@renderer/utils/ipc'
 
@@ -23,7 +23,7 @@ export const ControledMihomoConfigProvider: React.FC<{ children: ReactNode }> =
     try {
       await patch(value)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '更新内核配置失败')
     } finally {
       mutateControledMihomoConfig()
     }
diff --git a/src/renderer/src/hooks/use-override-config.tsx b/src/renderer/src/hooks/use-override-config.tsx
index 75b087f..4159370 100644
--- a/src/renderer/src/hooks/use-override-config.tsx
+++ b/src/renderer/src/hooks/use-override-config.tsx
@@ -1,5 +1,5 @@
 import React, { createContext, useContext, ReactNode } from 'react'
-import { toast } from '@renderer/components/base/toast'
+import { showError } from '@renderer/utils/error-display'
 import useSWR from 'swr'
 import {
   getOverrideConfig,
@@ -29,7 +29,7 @@ export const OverrideConfigProvider: React.FC<{ children: ReactNode }> = ({ chil
     try {
       await set(config)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '保存覆写配置失败')
     } finally {
       mutateOverrideConfig()
     }
@@ -39,7 +39,7 @@ export const OverrideConfigProvider: React.FC<{ children: ReactNode }> = ({ chil
     try {
       await add(item)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '添加覆写失败')
     } finally {
       mutateOverrideConfig()
     }
@@ -49,7 +49,7 @@ export const OverrideConfigProvider: React.FC<{ children: ReactNode }> = ({ chil
     try {
       await remove(id)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '删除覆写失败')
     } finally {
       mutateOverrideConfig()
     }
@@ -59,7 +59,7 @@ export const OverrideConfigProvider: React.FC<{ children: ReactNode }> = ({ chil
     try {
       await update(item)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '更新覆写失败')
     } finally {
       mutateOverrideConfig()
     }
diff --git a/src/renderer/src/hooks/use-profile-config.tsx b/src/renderer/src/hooks/use-profile-config.tsx
index f1954f8..fa949d3 100644
--- a/src/renderer/src/hooks/use-profile-config.tsx
+++ b/src/renderer/src/hooks/use-profile-config.tsx
@@ -1,4 +1,5 @@
 import React, { createContext, ReactNode, useContext } from 'react'
+import { showError } from '@renderer/utils/error-display'
 import { toast } from '@renderer/components/base/toast'
 import useSWR from 'swr'
 import {
@@ -33,7 +34,7 @@ export const ProfileConfigProvider: React.FC<{ children: ReactNode }> = ({ child
     try {
       await set(config)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '保存配置失败')
     } finally {
       mutateProfileConfig()
       window.electron.ipcRenderer.send('updateTrayMenu')
@@ -44,7 +45,7 @@ export const ProfileConfigProvider: React.FC<{ children: ReactNode }> = ({ child
     try {
       await add(item)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '添加配置失败')
     } finally {
       mutateProfileConfig()
       window.electron.ipcRenderer.send('updateTrayMenu')
@@ -55,7 +56,7 @@ export const ProfileConfigProvider: React.FC<{ children: ReactNode }> = ({ child
     try {
       await remove(id)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '删除配置失败')
     } finally {
       mutateProfileConfig()
       window.electron.ipcRenderer.send('updateTrayMenu')
@@ -66,7 +67,7 @@ export const ProfileConfigProvider: React.FC<{ children: ReactNode }> = ({ child
     try {
       await update(item)
     } catch (e) {
-      toast.error(String(e))
+      await showError(e, '更新配置失败')
     } finally {
       mutateProfileConfig()
       window.electron.ipcRenderer.send('updateTrayMenu')
@@ -108,7 +109,7 @@ export const ProfileConfigProvider: React.FC<{ children: ReactNode }> = ({ child
         if (errorMsg.includes('reply was never sent')) {
           setTimeout(() => mutateProfileConfig(), 1000)
         } else {
-          toast.error(errorMsg, '切换配置失败')
+          await showError(errorMsg, '切换配置失败')
           mutateProfileConfig()
         }
       } finally {
diff --git a/src/renderer/src/pages/dns.tsx b/src/renderer/src/pages/dns.tsx
index 7cc4c14..a3a5656 100644
--- a/src/renderer/src/pages/dns.tsx
+++ b/src/renderer/src/pages/dns.tsx
@@ -1,6 +1,6 @@
 import { Button, Tab, Input, Switch, Tabs, Divider } from '@heroui/react'
 import BasePage from '@renderer/components/base/base-page'
-import { toast } from '@renderer/components/base/toast'
+import { showErrorSync } from '@renderer/utils/error-display'
 import { MdDeleteForever } from 'react-icons/md'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
@@ -146,7 +146,7 @@ const DNS: React.FC = () => {
         await restartCore()
       }
     } catch (e) {
-      toast.error(String(e))
+      showErrorSync(e, 'DNS配置保存失败')
     }
   }
 
diff --git a/src/renderer/src/pages/mihomo.tsx b/src/renderer/src/pages/mihomo.tsx
index 0cc1bb7..69cd945 100644
--- a/src/renderer/src/pages/mihomo.tsx
+++ b/src/renderer/src/pages/mihomo.tsx
@@ -1,6 +1,7 @@
 import { Button, Divider, Input, Select, SelectItem, Switch, Tooltip, Modal, ModalContent, ModalHeader, ModalBody, ModalFooter, useDisclosure, Spinner, Chip } from '@heroui/react'
 import BasePage from '@renderer/components/base/base-page'
 import { toast } from '@renderer/components/base/toast'
+import { showError } from '@renderer/utils/error-display'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
 import { useAppConfig } from '@renderer/hooks/use-app-config'
@@ -14,7 +15,6 @@ import {
   restartCore,
   startSubStoreBackendServer,
   triggerSysProxy,
-  showDetailedError,
   fetchMihomoTags,
   installSpecificMihomoCore,
   clearMihomoVersionCache
@@ -306,11 +306,7 @@ const Mihomo: React.FC = () => {
       const errorMessage = e instanceof Error ? e.message : String(e)
       console.error('Core restart failed:', errorMessage)
 
-      if (errorMessage.includes('配置检查失败') || errorMessage.includes('Profile Check Failed')) {
-        await showDetailedError(t('mihomo.error.profileCheckFailed'), errorMessage)
-      } else {
-        toast.error(errorMessage)
-      }
+      await showError(errorMessage, t('mihomo.error.profileCheckFailed'))
     } finally {
       PubSub.publish('mihomo-core-changed')
     }
diff --git a/src/renderer/src/pages/sniffer.tsx b/src/renderer/src/pages/sniffer.tsx
index f59cc41..85ff475 100644
--- a/src/renderer/src/pages/sniffer.tsx
+++ b/src/renderer/src/pages/sniffer.tsx
@@ -1,6 +1,6 @@
 import { Button, Divider, Input, Switch } from '@heroui/react'
 import BasePage from '@renderer/components/base/base-page'
-import { toast } from '@renderer/components/base/toast'
+import { showErrorSync } from '@renderer/utils/error-display'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
 import { useControledMihomoConfig } from '@renderer/hooks/use-controled-mihomo-config'
@@ -71,7 +71,7 @@ const Sniffer: React.FC = () => {
         await restartCore()
       }
     } catch (e) {
-      toast.error(String(e))
+      showErrorSync(e, '嵅探配置保存失败')
     }
   }
 
diff --git a/src/renderer/src/pages/sysproxy.tsx b/src/renderer/src/pages/sysproxy.tsx
index 612f7ef..49a0c26 100644
--- a/src/renderer/src/pages/sysproxy.tsx
+++ b/src/renderer/src/pages/sysproxy.tsx
@@ -1,6 +1,6 @@
 import { Button, Input, Tab, Tabs } from '@heroui/react'
 import BasePage from '@renderer/components/base/base-page'
-import { toast } from '@renderer/components/base/toast'
+import { showErrorSync } from '@renderer/utils/error-display'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
 import PacEditorModal from '@renderer/components/sysproxy/pac-editor-modal'
@@ -106,7 +106,7 @@ const Sysproxy: React.FC = () => {
     } catch (e) {
       setValues({ ...values, enable: previousState })
       setChanged(true)
-      toast.error(String(e))
+      showErrorSync(e, '系统代理设置失败')
 
       await patchAppConfig({ sysProxy: { enable: false } })
     }
diff --git a/src/renderer/src/pages/tun.tsx b/src/renderer/src/pages/tun.tsx
index 362d511..1a5e6be 100644
--- a/src/renderer/src/pages/tun.tsx
+++ b/src/renderer/src/pages/tun.tsx
@@ -1,6 +1,6 @@
 import { Button, Input, Switch, Tab, Tabs } from '@heroui/react'
 import BasePage from '@renderer/components/base/base-page'
-import { toast } from '@renderer/components/base/toast'
+import { showErrorSync } from '@renderer/utils/error-display'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
 import { useControledMihomoConfig } from '@renderer/hooks/use-controled-mihomo-config'
@@ -113,7 +113,7 @@ const Tun: React.FC = () => {
                     new Notification(t('tun.notifications.firewallResetSuccess'))
                     await restartCore()
                   } catch (e) {
-                    toast.error(String(e))
+                    showErrorSync(e, '防火墙设置失败')
                   } finally {
                     setLoading(false)
                   }
@@ -134,7 +134,7 @@ const Tun: React.FC = () => {
                     new Notification(t('tun.notifications.coreAuthSuccess'))
                     await restartCore()
                   } catch (e) {
-                    toast.error(String(e))
+                    showErrorSync(e, '内核授权失败')
                   }
                 }}
               >
diff --git a/src/renderer/src/utils/error-display.ts b/src/renderer/src/utils/error-display.ts
new file mode 100644
index 0000000..82e7ce0
--- /dev/null
+++ b/src/renderer/src/utils/error-display.ts
@@ -0,0 +1,52 @@
+import { toast } from '@renderer/components/base/toast'
+
+const DETAILED_ERROR_KEYWORDS = [
+  'yaml',
+  'YAML',
+  'config',
+  'profile',
+  'parse',
+  'syntax',
+  'invalid',
+  'failed to',
+  'connection refused',
+  'ECONNREFUSED',
+  'ETIMEDOUT',
+  'ENOTFOUND',
+  'certificate',
+  'SSL',
+  'TLS',
+  'Permission denied',
+  'Access denied',
+  '配置',
+  '解析',
+  '失败',
+  '权限',
+  '证书'
+]
+
+function shouldShowDetailedError(message: string): boolean {
+  if (message.length > 80) return true
+  if (message.includes('\n')) return true
+  return DETAILED_ERROR_KEYWORDS.some((keyword) => message.includes(keyword))
+}
+
+export async function showError(error: unknown, title?: string): Promise<void> {
+  const message = error instanceof Error ? error.message : String(error)
+
+  if (shouldShowDetailedError(message)) {
+    toast.detailedError(message, title || '错误')
+  } else {
+    toast.error(message, title)
+  }
+}
+
+export function showErrorSync(error: unknown, title?: string): void {
+  const message = error instanceof Error ? error.message : String(error)
+
+  if (shouldShowDetailedError(message)) {
+    toast.detailedError(message, title || '错误')
+  } else {
+    toast.error(message, title)
+  }
+}