diff --git a/src/views/ops/pages/dc/device-collect/components/FormDialog.vue b/src/views/ops/pages/dc/device-collect/components/FormDialog.vue
index c67a6dd..2a947b1 100644
--- a/src/views/ops/pages/dc/device-collect/components/FormDialog.vue
+++ b/src/views/ops/pages/dc/device-collect/components/FormDialog.vue
@@ -314,6 +314,8 @@ const createEmptySnmpOidRow = (): SnmpOidRow => ({
   type: '',
 })
 
+const snmpOidTableFields = ['oid', 'metric_name', 'metric_unit', 'type']
+
 const normalizeSnmpOidRows = (rows: SnmpOidRow[]) =>
   rows
     .map((row) => ({
@@ -337,6 +339,28 @@ const findIncompleteSnmpOidRowIndex = (rows: SnmpOidRow[]) =>
     return Boolean(hasAnyValue && (!normalizedRow.oid || !normalizedRow.metric_name))
   })
 
+const parseSnmpOidJsonArray = (raw: string) => {
+  const text = raw.trim()
+  if (!text) {
+    return []
+  }
+  const parsed = JSON.parse(text)
+  if (!Array.isArray(parsed)) {
+    throw new Error('SNMP OID 配置必须是 JSON 数组')
+  }
+  return parsed
+}
+
+const hasSnmpOidTableUnsupportedFields = (raw: string) => {
+  const rows = parseSnmpOidJsonArray(raw)
+  return rows.some((item) => {
+    if (!item || typeof item !== 'object' || Array.isArray(item)) {
+      return Boolean(item)
+    }
+    return Object.keys(item).some((key) => !snmpOidTableFields.includes(key))
+  })
+}
+
 const stringifySnmpOidRows = (rows: SnmpOidRow[]) => {
   const normalizedRows = normalizeSnmpOidRows(rows)
   return normalizedRows.length ? JSON.stringify(normalizedRows, null, 2) : ''
@@ -347,10 +371,7 @@ const parseSnmpOidRows = (raw: string): SnmpOidRow[] => {
   if (!text) {
     return []
   }
-  const parsed = JSON.parse(text)
-  if (!Array.isArray(parsed)) {
-    throw new Error('SNMP OID 配置必须是 JSON 数组')
-  }
+  const parsed = parseSnmpOidJsonArray(text)
   return parsed.map((item) => ({
     oid: String(item?.oid ?? '').trim(),
     metric_name: String(item?.metric_name ?? '').trim(),
@@ -432,7 +453,12 @@ watch(
         })
         snmpOidEditMode.value = 'table'
         try {
-          syncSnmpOidRowsFromJson()
+          if (hasSnmpOidTableUnsupportedFields(formData.snmp_oids || '')) {
+            snmpOidEditMode.value = 'json'
+            snmpOidRows.value = []
+          } else {
+            syncSnmpOidRowsFromJson()
+          }
         } catch {
           snmpOidEditMode.value = 'json'
           snmpOidRows.value = []
@@ -495,6 +521,10 @@ const switchSnmpOidEditMode = () => {
     return
   }
   try {
+    if (hasSnmpOidTableUnsupportedFields(formData.snmp_oids)) {
+      Message.warning('当前 SNMP OID JSON 包含表格不支持的字段，请在 JSON 模式下编辑')
+      return
+    }
     syncSnmpOidRowsFromJson()
     snmpOidEditMode.value = 'table'
   } catch {
@@ -521,6 +551,7 @@ const validateSnmpOidConfigBeforeSubmit = () => {
   }
 
   try {
+    const parsedRows = parseSnmpOidJsonArray(formData.snmp_oids)
     const rows = parseSnmpOidRows(formData.snmp_oids)
     const invalidIndex = findIncompleteSnmpOidRowIndex(rows)
     if (invalidIndex >= 0) {
@@ -529,7 +560,7 @@ const validateSnmpOidConfigBeforeSubmit = () => {
     }
     const normalizedRows = normalizeSnmpOidRows(rows)
     snmpOidRows.value = normalizedRows
-    formData.snmp_oids = normalizedRows.length ? JSON.stringify(normalizedRows, null, 2) : ''
+    formData.snmp_oids = JSON.stringify(parsedRows, null, 2)
     return true
   } catch {
     Message.warning('SNMP OID 配置必须是合法 JSON 数组')