diff --git a/web/app/components/plugins/plugin-auth/authorize/oauth-client-settings.tsx b/web/app/components/plugins/plugin-auth/authorize/oauth-client-settings.tsx
index 6f80570627..12095cb8e2 100644
--- a/web/app/components/plugins/plugin-auth/authorize/oauth-client-settings.tsx
+++ b/web/app/components/plugins/plugin-auth/authorize/oauth-client-settings.tsx
@@ -4,6 +4,7 @@ import {
   useRef,
   useState,
 } from 'react'
+import { RiExternalLinkLine } from '@remixicon/react'
 import {
   useForm,
   useStore,
@@ -24,6 +25,7 @@ import type {
 } from '@/app/components/base/form/types'
 import { useToastContext } from '@/app/components/base/toast'
 import Button from '@/app/components/base/button'
+import { useRenderI18nObject } from '@/hooks/use-i18n'
 
 type OAuthClientSettingsProps = {
   pluginPayload: PluginPayload
@@ -127,6 +129,8 @@ const OAuthClientSettings = ({
     defaultValues: editValues || defaultValues,
   })
   const __oauth_client__ = useStore(form.store, s => s.values.__oauth_client__)
+  const helpField = schemas.find(schema => schema.url && schema.help)
+  const renderI18nObject = useRenderI18nObject()
   return (
     <Modal
       title={t('plugin.auth.oauthClientSettings')}
@@ -155,13 +159,26 @@ const OAuthClientSettings = ({
         )
       }
     >
-      <AuthForm
-        formFromProps={form}
-        ref={formRef}
-        formSchemas={schemas}
-        defaultValues={editValues || defaultValues}
-        disabled={disabled}
-      />
+      <>
+        <AuthForm
+          formFromProps={form}
+          ref={formRef}
+          formSchemas={schemas}
+          defaultValues={editValues || defaultValues}
+          disabled={disabled}
+        />
+        {
+          helpField && __oauth_client__ === 'custom' && (
+          <a
+            className='system-xs-regular mt-4 flex h-4 items-center text-text-accent'
+            href={helpField?.url}
+            target='_blank'
+          >
+            {renderI18nObject(helpField?.help as any)}
+            <RiExternalLinkLine className='ml-1 h-3 w-3' />
+          </a>
+        )}
+      </>
     </Modal>
   )
 }