diff --git a/.env.development.yh b/.env.development.yh
index ba0927c8..be042c33 100644
--- a/.env.development.yh
+++ b/.env.development.yh
@@ -2,14 +2,14 @@
 ENV = 'development.yh'
 # 'development.yh'
 
- VITE_APP_BASE_H5_API_Url = 'http://25.18.122.65:7001'
+# VITE_APP_BASE_H5_API_Url = 'http://25.18.122.65:7001'
 
 # VITE_APP_BASE_H5_API_Url = 'http://25.18.122.91:9786'
-# VITE_APP_BASE_H5_API_Url = 'http://25.18.122.78:9786'
+VITE_APP_BASE_H5_API_Url = 'http://25.18.122.78:9786'
 # VITE_APP_BASE_API_Url = 'https://aitstest.jlbank.com.cn:7002'
 # VITE_APP_BASE_H5_API_Url_TRAEXAM = 'http://25.64.32.154:9604'
 # VITE_APP_BASE_H5_API_Url_TRAPRACTICE = 'http://25.64.32.156:9603'
 # VITE_APP_BASE_H5_API_Url_TRAAPP = 'http://25.64.32.154:9601'
 # VITE_APP_BASE_H5_API_Url_TRAAPP = 'http://25.64.32.158:9601'
-# VITE_APP_BASE_H5_API_Url_TRASTUDY = 'http://25.64.32.154:9602'
+VITE_APP_BASE_H5_API_Url_TRASTUDY = 'http://25.64.32.154:9602'
 
diff --git a/src/api/study.js b/src/api/study.js
index eec4f21e..12a76423 100644
--- a/src/api/study.js
+++ b/src/api/study.js
@@ -203,4 +203,13 @@ export const setStudyTeacherApi = (data) => {
 		toastErrors: true,
 		data
 	});
+};
+// 预览切换顾问
+export const setPreviewTeacherApi = (data) => {
+	return request({
+		url: base_url + '/traStdyTeacher/setStudyTeacherPreview ',
+		method: 'post',
+		toastErrors: true,
+		data
+	});
 };
\ No newline at end of file
diff --git a/src/pages/course/study.vue b/src/pages/course/study.vue
index 81dc8812..49253192 100644
--- a/src/pages/course/study.vue
+++ b/src/pages/course/study.vue
@@ -130,7 +130,16 @@ import { onLoad, onShow, onUnload, onHide } from '@dcloudio/uni-app'
 import { previewFile, downloadFile, commonUploadVoiceFile, downloadVoiceFile, uploadVoiceFile } from '@/api/common.js'
 import { getToken, getPhoneEnvBool } from '@/common/common.js'
 import { get_base_url, goto_login_fun } from '@/api/request'
-import { getCourseStudyInfoApi, afreshStudyCourseApi, queryQuestionEvalateApi, textChartApi, setStudyTeacherApi, textChartPreviewApi, previewAfreshStudyCourse, studyEndApi, studyStartApi } from '@/api/study.js'
+import { getCourseStudyInfoApi, 
+afreshStudyCourseApi, 
+queryQuestionEvalateApi, 
+textChartApi, 
+setStudyTeacherApi, 
+setPreviewTeacherApi, 
+textChartPreviewApi, 
+previewAfreshStudyCourse, 
+studyEndApi, 
+studyStartApi } from '@/api/study.js'
 import common from '@/common/common'
 import TalkingItem from '@/pages/course/components/talkingItem.vue'
 import ImagePreview from '@/components/image-preview/image-preview.vue'
@@ -302,7 +311,8 @@ const choiceTeacherInfo = computed(() => {
 const changeTeacherVoiceNow = async item => {
   if (item.teacherNo === choiceTeacher.value) return
   try {
-    const res = await setStudyTeacherApi({
+		let _ajax = isPreview.value ? setPreviewTeacherApi : setStudyTeacherApi
+    const res = await _ajax({
       stdyId: stdyId.value,
       teacherNo: item.teacherNo
     })