1. First open the main interface of Tik Tok Audio and Video Login, and then select and click the option of "Login Encountered Problems".

2. After opening the login encounter interface, select and click the "Tik Tok Security Center" option.

3. After entering the interface of Tik Tok Security Center, select and click the "Lock Protection" option.

4. After entering the lock protection interface, select and click the "lock" option.

5. Then enter your Tik Tok account and click Next.

6. Then enter your mobile phone number and verification code, and click Next.

7. Finally, the protection function can be locked successfully.

Tik Tok, a short video social software with musical creativity, was hatched by ByteDance. The software was launched on September 20, 2006. It is a short video community platform suitable for all ages. Users can choose songs, shoot music works and form their own works through this software.