diff --git a/dashboard/public/statics/locales/en.json b/dashboard/public/statics/locales/en.json
index 25a715b5d..3b586764e 100644
--- a/dashboard/public/statics/locales/en.json
+++ b/dashboard/public/statics/locales/en.json
@@ -1873,7 +1873,11 @@
     "shadowsocksPasswordGenerationFailed": "Failed to generate password",
     "realityTab": "Reality",
     "vlessTab": "VLESS",
-    "shadowsocksTab": "ShadowSocks"
+    "shadowsocksTab": "ShadowSocks",
+    "unsavedChanges": "Unsaved Changes",
+    "unsavedChangesMessage": "You have unsaved changes. Are you sure you want to exit without saving?",
+    "keepEditing": "Keep Editing",
+    "discardChanges": "Discard Changes"
   },
   "settings.cores.title": "Cores",
   "settings.cores.description": "Manage Your Cores",
diff --git a/dashboard/public/statics/locales/fa.json b/dashboard/public/statics/locales/fa.json
index b3fa7c6ac..93093523f 100644
--- a/dashboard/public/statics/locales/fa.json
+++ b/dashboard/public/statics/locales/fa.json
@@ -1788,7 +1788,11 @@
     "shadowsocksPasswordGenerationFailed": "تولید رمز عبور ناموفق بود",
     "realityTab": "Reality",
     "vlessTab": "VLESS",
-    "shadowsocksTab": "ShadowSocks"
+    "shadowsocksTab": "ShadowSocks",
+    "unsavedChanges": "تغییرات ذخیره نشده",
+    "unsavedChangesMessage": "شما تغییرات ذخیره نشده‌ای دارید. آیا مطمئن هستید که می‌خواهید بدون ذخیره خارج شوید؟",
+    "keepEditing": "ادامه ویرایش",
+    "discardChanges": "لغو تغییرات"
   },
   "settings.cores.title": "هسته‌ها",
   "settings.cores.description": "مدیریت هسته‌های شما",
diff --git a/dashboard/public/statics/locales/ru.json b/dashboard/public/statics/locales/ru.json
index b3975890a..2150a1816 100644
--- a/dashboard/public/statics/locales/ru.json
+++ b/dashboard/public/statics/locales/ru.json
@@ -1762,7 +1762,11 @@
     "shadowsocksPasswordGenerationFailed": "Не удалось сгенерировать пароль",
     "realityTab": "Reality",
     "vlessTab": "VLESS",
-    "shadowsocksTab": "ShadowSocks"
+    "shadowsocksTab": "ShadowSocks",
+    "unsavedChanges": "Несохраненные изменения",
+    "unsavedChangesMessage": "У вас есть несохраненные изменения. Вы уверены, что хотите выйти без сохранения?",
+    "keepEditing": "Продолжить редактирование",
+    "discardChanges": "Отменить изменения"
   },
   "settings.cores.title": "Ядра",
   "settings.cores.description": "Управление вашими ядрами",
diff --git a/dashboard/public/statics/locales/zh.json b/dashboard/public/statics/locales/zh.json
index d9459bb42..a6d2a6d64 100644
--- a/dashboard/public/statics/locales/zh.json
+++ b/dashboard/public/statics/locales/zh.json
@@ -1835,7 +1835,11 @@
     "shadowsocksPasswordGenerationFailed": "密码生成失败",
     "realityTab": "Reality",
     "vlessTab": "VLESS",
-    "shadowsocksTab": "ShadowSocks"
+    "shadowsocksTab": "ShadowSocks",
+    "unsavedChanges": "未保存的更改",
+    "unsavedChangesMessage": "您有未保存的更改。您确定要在不保存的情况下退出吗？",
+    "keepEditing": "继续编辑",
+    "discardChanges": "放弃更改"
   },
   "settings.cores.title": "核心",
   "settings.cores.description": "管理您的核心",
diff --git a/dashboard/src/components/dialogs/core-config-modal.tsx b/dashboard/src/components/dialogs/core-config-modal.tsx
index 06f9d3ef1..b27997fea 100644
--- a/dashboard/src/components/dialogs/core-config-modal.tsx
+++ b/dashboard/src/components/dialogs/core-config-modal.tsx
@@ -2,6 +2,7 @@ import { CopyButton } from '@/components/common/copy-button'
 import { Button } from '@/components/ui/button'
 import { Checkbox } from '@/components/ui/checkbox'
 import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
+import { AlertDialog, AlertDialogCancel, AlertDialogContent, AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle } from '@/components/ui/alert-dialog'
 import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@/components/ui/form'
 import { Input } from '@/components/ui/input'
 import { Label } from '@/components/ui/label'
@@ -20,7 +21,7 @@ import { generateWireGuardKeyPair } from '@/utils/wireguard'
 import { encodeURLSafe } from '@stablelib/base64'
 import { generateKeyPair } from '@stablelib/x25519'
 import { debounce } from 'es-toolkit'
-import { Info, Key, Maximize2, Minimize2, Sparkles, Shield, Pencil, Cpu } from 'lucide-react'
+import { Info, Key, Maximize2, Minimize2, Sparkles, Shield, Pencil, Cpu, AlertTriangle } from 'lucide-react'
 import { MlKem768 } from 'mlkem'
 import { Suspense, lazy, useCallback, useEffect, useState } from 'react'
 import { UseFormReturn } from 'react-hook-form'
@@ -185,6 +186,10 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
   const [generatedShadowsocksPassword, setGeneratedShadowsocksPassword] = useState<{ password: string; encryptionMethod: string } | null>(null)
   const [generatedMldsa65, setGeneratedMldsa65] = useState<{ seed: string; verify: string } | null>(null)
   const [generatedVLESS, setGeneratedVLESS] = useState<any>(null)
+
+  // Unsaved changes confirmation dialog state
+  const [isConfirmExitDialogOpen, setIsConfirmExitDialogOpen] = useState(false)
+
   const handleVlessVariantChange = useCallback(
     (value: string) => {
       if (value === 'x25519' || value === 'mlkem768') {
@@ -201,6 +206,30 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
     setIsResultsDialogOpen(true)
   }, [])
 
+  // Handle modal close with unsaved changes check
+  const handleModalCloseWithCheck = useCallback((open: boolean) => {
+    if (!open && form.formState.isDirty) {
+      setIsConfirmExitDialogOpen(true)
+    } else {
+      onOpenChange(open)
+      if (!open) {
+        form.reset()
+      }
+    }
+  }, [form, onOpenChange])
+
+  // Confirm exit without saving
+  const handleConfirmExit = useCallback(() => {
+    setIsConfirmExitDialogOpen(false)
+    form.reset()
+    onOpenChange(false)
+  }, [form, onOpenChange])
+
+  // Cancel exit
+  const handleCancelExit = useCallback(() => {
+    setIsConfirmExitDialogOpen(false)
+  }, [])
+
   const relayoutEditor = useCallback(
     (editor = editorInstance) => {
       if (!editor) return
@@ -736,6 +765,7 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
       setValidation({ isValid: true })
       setEditorInstance(null)
       setIsEditorReady(false)
+      setIsConfirmExitDialogOpen(false)
       // Don't clear generated values - keep them for reuse
     }
   }, [isDialogOpen])
@@ -1325,7 +1355,7 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
     <>
       {renderVlessAdvancedModal()}
       {renderResultDialog()}
-      <Dialog open={isDialogOpen} onOpenChange={onOpenChange}>
+      <Dialog open={isDialogOpen} onOpenChange={handleModalCloseWithCheck}>
         <DialogContent className="h-full w-full max-w-5xl md:h-auto">
           <DialogHeader>
             <DialogTitle className="flex items-center gap-2">
@@ -1809,7 +1839,7 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
                   )}
 
                   <div className="flex justify-end gap-2">
-                    <Button type="button" variant="outline" onClick={() => onOpenChange(false)} disabled={createCoreMutation.isPending || modifyCoreMutation.isPending}>
+                    <Button type="button" variant="outline" onClick={() => handleModalCloseWithCheck(false)} disabled={createCoreMutation.isPending || modifyCoreMutation.isPending}>
                       {t('cancel')}
                     </Button>
                     <LoaderButton
@@ -1827,6 +1857,31 @@ export default function CoreConfigModal({ isDialogOpen, onOpenChange, form, edit
           </Form>
         </DialogContent>
       </Dialog>
+
+      {/* Unsaved Changes Confirmation Dialog */}
+      <AlertDialog open={isConfirmExitDialogOpen} onOpenChange={setIsConfirmExitDialogOpen}>
+        <AlertDialogContent>
+          <AlertDialogHeader>
+            <AlertDialogTitle className="flex items-center gap-2">
+              <AlertTriangle className="h-5 w-5 text-destructive" />
+              {t('coreConfigModal.unsavedChanges', { defaultValue: 'Unsaved Changes' })}
+            </AlertDialogTitle>
+            <AlertDialogDescription>
+              {t('coreConfigModal.unsavedChangesMessage', { 
+                defaultValue: 'You have unsaved changes. Are you sure you want to exit without saving?' 
+              })}
+            </AlertDialogDescription>
+          </AlertDialogHeader>
+          <AlertDialogFooter>
+            <AlertDialogCancel onClick={handleCancelExit}>
+              {t('coreConfigModal.keepEditing', { defaultValue: 'Keep Editing' })}
+            </AlertDialogCancel>
+            <Button variant="destructive" onClick={handleConfirmExit}>
+              {t('coreConfigModal.discardChanges', { defaultValue: 'Discard Changes' })}
+            </Button>
+          </AlertDialogFooter>
+        </AlertDialogContent>
+      </AlertDialog>
     </>
   )
 }