1: Log in to your QQ space and click "Spatial Data" on the left side of "Settings =" at the top right of the space to edit the signature file under the spatial data;

2: Then click "Picture" at the top of the signature file editing box to pop up the Insert Picture dialog box. Please choose one of three ways: photo album, local upload and grid picture, add your favorite picture, and finally click OK to save.

After setting, when you leave a message in other people's QQ space, you can check the "Use signature file" below, so that after posting the message, the picture of the signature file will be displayed below the message content.