diff --git a/packages/business/package.json b/packages/business/package.json
index 7756e8b28..079c23410 100644
--- a/packages/business/package.json
+++ b/packages/business/package.json
@@ -20,6 +20,7 @@
     "axios": "catalog:",
     "cron-parser": "catalog:",
     "dayjs": "catalog:",
+    "json5": "^2.2.3",
     "juice": "catalog:",
     "lodash": "catalog:",
     "monaco-editor": "catalog:",
diff --git a/packages/business/src/views/data-server/Drawer.vue b/packages/business/src/views/data-server/Drawer.vue
index b9c81c7e0..31ced82c5 100644
--- a/packages/business/src/views/data-server/Drawer.vue
+++ b/packages/business/src/views/data-server/Drawer.vue
@@ -453,6 +453,11 @@ const save = async (type?: boolean) => {
       }
     }
 
+    const normalizedCustomWhere =
+      apiType === 'customerQuery' && fullCustomQuery
+        ? mqlEditor.value?.normalize(customWhere) ?? customWhere
+        : customWhere
+
     const params = form.value?.params
       ?.filter((t: any) => t.name)
       .map((t: any) => {
@@ -537,12 +542,16 @@ const save = async (type?: boolean) => {
             fields,
             path,
             fullCustomQuery,
-            customWhere,
+            customWhere: normalizedCustomWhere,
           },
         ],
         pathSetting: pathSettingList,
       }
 
+      if (apiType === 'customerQuery' && fullCustomQuery) {
+        form.value.customWhere = normalizedCustomWhere
+      }
+
       if (!type && connectionId && tableName) {
         formData.fields = allFields.value
         // const fieldList = await getAllFields()
diff --git a/packages/business/src/views/data-server/MqlEditor.vue b/packages/business/src/views/data-server/MqlEditor.vue
index 39eb2def1..fb8dfc5fd 100644
--- a/packages/business/src/views/data-server/MqlEditor.vue
+++ b/packages/business/src/views/data-server/MqlEditor.vue
@@ -1,10 +1,12 @@
 <script setup lang="ts">
 import { useI18n } from '@tap/i18n'
+import JSON5 from 'json5'
 import * as monaco from 'monaco-editor'
-import { onBeforeUnmount, ref } from 'vue'
+import { ref } from 'vue'
 import MonacoEditor from './MonacoEditor.vue'
 
 const { t } = useI18n()
+const JSON5_LANGUAGE_ID = 'json5'
 
 const props = defineProps({
   height: {
@@ -35,7 +37,73 @@ const editorValue = defineModel('modelValue', {
   type: String,
   default: '',
 })
-const monacoEditorRef = ref(null)
+const monacoEditorRef = ref<any>(null)
+
+let json5LanguageRegistered = false
+
+const registerJson5Language = () => {
+  if (json5LanguageRegistered) return
+
+  monaco.languages.register({
+    id: JSON5_LANGUAGE_ID,
+    extensions: ['.json5'],
+    aliases: ['JSON5', 'json5'],
+  })
+
+  monaco.languages.setLanguageConfiguration(JSON5_LANGUAGE_ID, {
+    comments: {
+      lineComment: '//',
+      blockComment: ['/*', '*/'],
+    },
+    brackets: [
+      ['{', '}'],
+      ['[', ']'],
+    ],
+    autoClosingPairs: [
+      { open: '{', close: '}' },
+      { open: '[', close: ']' },
+      { open: '(', close: ')' },
+      { open: '"', close: '"', notIn: ['string', 'comment'] },
+      { open: "'", close: "'", notIn: ['string', 'comment'] },
+    ],
+    surroundingPairs: [
+      { open: '{', close: '}' },
+      { open: '[', close: ']' },
+      { open: '(', close: ')' },
+      { open: '"', close: '"' },
+      { open: "'", close: "'" },
+    ],
+  })
+
+  monaco.languages.setMonarchTokensProvider(JSON5_LANGUAGE_ID, {
+    defaultToken: '',
+    tokenPostfix: '.json5',
+    tokenizer: {
+      root: [
+        [/[ \t\r\n]+/, 'white'],
+        [/\/\/.*$/, 'comment'],
+        [/\/\*/, { token: 'comment', next: '@comment' }],
+        [/\b(?:true|false|null|Infinity|NaN)\b/, 'keyword'],
+        [/[+\-]?(?:0x[0-9a-f]+|(?:\d+\.\d*|\.\d+|\d+)(?:e[+\-]?\d+)?)/i, 'number'],
+        [/'(?:[^'\\]|\\.)*'/, 'string'],
+        [/"(?:[^"\\]|\\.)*"/, 'string'],
+        [/[A-Z_$][\w$]*/i, 'identifier'],
+        [/[{}[\]]/, '@brackets'],
+        [/[:,]/, 'delimiter'],
+        [/./, 'delimiter.invalid'],
+      ],
+      comment: [
+        [/[^/*]+/, 'comment'],
+        [/\*\//, { token: 'comment', next: '@pop' }],
+        [/[/*]/, 'comment'],
+      ],
+    },
+  })
+
+  json5LanguageRegistered = true
+}
+
+registerJson5Language()
 
 const mongoOperators = [
   // Comparison operators
@@ -141,16 +209,17 @@ const mongoOperators = [
   },
 ]
 
-const registerMongoCompletion = () => {
-  return monaco.languages.registerCompletionItemProvider('json', {
+const registerMongoCompletion = (languageId: string) => {
+  return monaco.languages.registerCompletionItemProvider(languageId, {
     triggerCharacters: ['$', '"', "'", '{'],
-    provideCompletionItems: (model, position) => {
+    provideCompletionItems: (model: any, position: any) => {
       const word = model.getWordUntilPosition(position)
       const lineContent = model.getLineContent(position.lineNumber)
       const textBeforeCursor = lineContent.slice(
         0,
         Math.max(0, position.column - 1),
       )
+      const isJson5 = model.getLanguageId() === JSON5_LANGUAGE_ID
 
       const range = {
         startLineNumber: position.lineNumber,
@@ -159,7 +228,7 @@ const registerMongoCompletion = () => {
         endColumn: word.endColumn,
       }
 
-      const suggestions = []
+      const suggestions: any[] = []
 
       if (lineContent?.trim() === '{}') return { suggestions }
 
@@ -200,14 +269,14 @@ const registerMongoCompletion = () => {
           label: op.label,
           kind: op.kind,
           detail: op.detail,
-          insertText: isInQuotes ? op.label : `"${op.label}"`,
+          insertText: isInQuotes || isJson5 ? op.label : `"${op.label}"`,
           range: replaceRange,
           sortText: `2${op.label}`,
         })),
       )
 
       if (props.fields && props.fields.length > 0) {
-        const matchingFields = props.fields.filter((field) =>
+        const matchingFields = (props.fields as any[]).filter((field: any) =>
           field.field_name.toLowerCase().startsWith(word.word.toLowerCase()),
         )
         if (matchingFields.length > 0) {
@@ -216,9 +285,10 @@ const registerMongoCompletion = () => {
               label: field.field_name,
               kind: monaco.languages.CompletionItemKind.Field,
               detail: field.data_type,
-              insertText: isInQuotes
-                ? field.field_name
-                : `"${field.field_name}"`,
+              insertText:
+                isInQuotes || isJson5
+                  ? field.field_name
+                  : `"${field.field_name}"`,
               range,
               sortText: `1${field.field_name}`,
             })),
@@ -227,7 +297,7 @@ const registerMongoCompletion = () => {
       }
 
       if (props.variables && props.variables.length > 0 && word.word) {
-        const matchingVariables = props.variables.filter((variable) =>
+        const matchingVariables = (props.variables as any[]).filter((variable: any) =>
           variable.name.toLowerCase().startsWith(word.word.toLowerCase()),
         )
 
@@ -271,9 +341,10 @@ const registerMongoCompletion = () => {
                 }
               } else {
                 // 不在 {{}} 内部，需要完整的 {{variable}}
-                insertText = isInQuotes
-                  ? `{{${variable.name}}}`
-                  : `"{{${variable.name}}}"`
+                insertText =
+                  isInQuotes || isJson5
+                    ? `{{${variable.name}}}`
+                    : `"{{${variable.name}}}"`
               }
 
               return {
@@ -299,19 +370,21 @@ const registerMongoCompletion = () => {
 }
 
 // 注册自动补全
-let completionDisposable = null
+let completionRegistered = false
 
-if (typeof monaco !== 'undefined') {
-  completionDisposable = registerMongoCompletion()
+if (typeof monaco !== 'undefined' && !completionRegistered) {
+  completionRegistered = true
+  registerMongoCompletion('json')
+  registerMongoCompletion(JSON5_LANGUAGE_ID)
 }
 
-const validateJSON = (jsonString) => {
+const validateJSON = (jsonString: string) => {
   if (!jsonString.trim()) {
     return { isValid: true, error: null }
   }
 
   try {
-    const parsed = JSON.parse(jsonString)
+    const parsed = JSON5.parse(jsonString)
     if (typeof parsed !== 'object' || parsed === null) {
       return {
         isValid: false,
@@ -323,32 +396,37 @@ const validateJSON = (jsonString) => {
       }
     }
     return { isValid: true, error: null }
-  } catch (syntaxError) {
+  } catch (syntaxError: any) {
+    const errorMessage = String(syntaxError?.message ?? '')
     return {
       isValid: false,
       error: {
-        message: syntaxError.message,
-        line: getErrorLine(syntaxError.message),
-        column: getErrorColumn(syntaxError.message),
+        message: errorMessage,
+        line: syntaxError.lineNumber || getErrorLine(errorMessage) || 1,
+        column: syntaxError.columnNumber || getErrorColumn(errorMessage) || 1,
       },
     }
   }
 }
 
 // Extract line number from JSON parse error message
-const getErrorLine = (errorMessage) => {
+function getErrorLine(errorMessage: string) {
   const lineMatch = errorMessage.match(/line (\d+)/i)
-  return lineMatch ? Number.parseInt(lineMatch[1]) : 1
+  return Number.parseInt(lineMatch?.[1] ?? '1')
 }
 
-const getErrorColumn = (errorMessage) => {
+function getErrorColumn(errorMessage: string) {
   const columnMatch = errorMessage.match(/column (\d+)/i)
-  return columnMatch ? Number.parseInt(columnMatch[1]) : 1
+  return Number.parseInt(columnMatch?.[1] ?? '1')
 }
 
-const validationError = ref(null)
+const validationError = ref<{
+  message: string
+  line: number
+  column: number
+} | null>(null)
 
-const handleChange = (val) => {
+const handleChange = (val: string) => {
   const validation = validateJSON(val)
   validationError.value = validation.error
 
@@ -360,20 +438,32 @@ const handleChange = (val) => {
   })
 }
 
-const formatCode = () => {
-  if (monacoEditorRef.value) {
-    monacoEditorRef.value.format()
+const normalizeJSON = (jsonString: string) => {
+  if (!jsonString.trim()) {
+    return ''
+  }
+
+  try {
+    const parsed = JSON5.parse(jsonString)
+    if (typeof parsed !== 'object' || parsed === null) {
+      return null
+    }
+    return JSON.stringify(parsed, null, 2)
+  } catch {
+    return null
   }
 }
 
-onBeforeUnmount(() => {
-  if (completionDisposable) {
-    completionDisposable.dispose()
+const formatCode = () => {
+  const normalized = normalizeJSON(editorValue.value)
+  if (normalized !== null) {
+    editorValue.value = normalized
   }
-})
+}
 
 defineExpose({
   format: formatCode,
+  normalize: normalizeJSON,
   getEditor: () => monacoEditorRef.value?.getEditor(),
   validateJSON,
 })
@@ -389,7 +479,7 @@ defineExpose({
         ref="monacoEditorRef"
         v-model="editorValue"
         :options="{
-          language: 'json',
+          language: 'json5',
           automaticLayout: true,
           minimap: { enabled: false },
           scrollBeyondLastLine: false,
@@ -407,6 +497,7 @@ defineExpose({
           formatOnType: false,
           ...options,
         }"
+        :height="height"
         @change="handleChange"
       />
     </div>
diff --git a/packages/ldp/src/DataTracePage.vue b/packages/ldp/src/DataTracePage.vue
index 85780fcc5..4284b756c 100644
--- a/packages/ldp/src/DataTracePage.vue
+++ b/packages/ldp/src/DataTracePage.vue
@@ -103,6 +103,7 @@ const bloodlineLoading = ref(false)
 const filterMode = ref<'builder' | 'mql'>('builder')
 const filterRows = ref<FilterRow[]>([{ field: '', operator: '=', value: '' }])
 const mqlJson = ref('')
+const mqlEditorRef = ref<any>(null)
 const trackedFields = ref<string[]>([])
 const trackedFieldInput = ref('')
 const selectedNodeId = ref<string | null>(null)
@@ -471,7 +472,22 @@ function handleTrace() {
       .filter(Boolean)
     if (custom.length) filters = { custom }
   } else {
-    filters = { sql: mqlJson.value }
+    const validation = mqlEditorRef.value?.validateJSON(mqlJson.value)
+    if (!validation?.isValid) {
+      ElMessage.error(
+        `${t('public_json_format_error')}: ${validation?.error?.message || ''}`,
+      )
+      tracing.value = false
+      nodeStatus.value = {}
+      return
+    }
+
+    const normalizedMqlJson =
+      mqlEditorRef.value?.normalize(mqlJson.value) ?? mqlJson.value
+    mqlJson.value = normalizedMqlJson
+    if (normalizedMqlJson.trim()) {
+      filters = { sql: normalizedMqlJson }
+    }
   }
 
   traceAbortController = getTraceData(
@@ -977,7 +993,12 @@ const OplogTreeNode = defineComponent({
 
       <!-- MQL Mode -->
       <div v-else class="trace-mql">
-        <MqlEditor v-model="mqlJson" height="180" :fields="fieldOptions" />
+        <MqlEditor
+          ref="mqlEditorRef"
+          v-model="mqlJson"
+          :height="180"
+          :fields="fieldOptions"
+        />
       </div>
 
       <!-- Tracked Fields -->
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 400d6c234..fb9807b2f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -733,6 +733,9 @@ importers:
       dayjs:
         specifier: 'catalog:'
         version: 1.11.13
+      json5:
+        specifier: ^2.2.3
+        version: 2.2.3
       juice:
         specifier: 'catalog:'
         version: 11.0.1