1. Habit control: drink plenty of water and change the bad habit of biting your lips.

2. lip exercise: suck your lips hard first, and then massage the edge of your lips with your fingers. Think like this for 5 minutes, 1 day, 3 to 5 times, and your lips will definitely become thinner after about 3 months.

3. Surgical correction of the lip: If the lip is too thick and has lip deformity, it can be corrected by lip surgery to make the lip thinner.