You can use the WeChat beauty teacher ID photo applet to change it. The specific method is: Take the operation of vivo mobile phone as an example:

1. First enter the WeChat page, search for the photo of the teacher ID, and open its applet.

2. After entering the applet page, click on the photo below to prepare to upload the photo.

3. The options window appears, and click the photo album to open the mobile phone photo album.

4. Enter the mobile phone photo album page, check the photo you want to upload, and then click Finish.

5. After the photo is uploaded successfully, click Next to prepare to change the photo background.

6. Enter the page, check the background of the photo you want, such as white, and then click Save Now to download the photo.

7. After downloading, you can see that the ID photo has been saved on your mobile phone.

8. Open the photo album of the mobile phone, and you can find the saved ID photo.