1. There may be a problem with the current network status.

2. It may be a problem with the WeChat version. Try to update to the latest version.

3. It may be a system bug. Clear the cached data, and then log in again.

4, it may be a mistake, just reset the chat background.

5. Maybe you don't have permission to give storage space to WeChat, so the chat background automatically reverts to the default.

Let me share with you the method of setting chat background pictures on WeChat, hoping to help you.

(Demo version: WeChat version 8.0. 16)

The specific steps are as follows:

1. After we open the WeChat APP, click Me in the lower right corner, and then click Settings.

2. Then click Chat.

3. Then click on the chat background.

4. After entering this interface, click to select from the photo album.

5. Select your favorite picture, and then click it.

6. Finally, click Use in the upper right corner to set it as the chat background.