1. First open Baidu APP, search for Beijing Health Treasure, and click Open, as shown in the figure below.
2. Then, on the opened Health Treasure page, select View my health code status, as shown in the figure below.
3. Then select and hold the personal photo, as shown in the figure below.
4. The interface of re-shooting the avatar will pop up, and select OK, as shown in the figure below.
5. Click to start face recognition authentication, re-identify and upload, that is, the photo is changed successfully, as shown in the figure below.