2. Then click the "Settings" option in the opened personal center, as shown in the figure below.
3. In the opened setting interface, click "Security Settings", as shown in the following figure.
4. Then click "Mobile Number" in the security settings interface, as shown below.
5. Finally, click "Change Mobile Number" in the mobile phone number interface, and then follow the prompts to change the mobile phone number.
5. At this time, click "Please log in" on the homepage of Beijing Health Bao, and the mobile phone number will change after logging in.