The first thing that should be done is to treat the primary cause of the upturned lip, which can be improved by wearing braces or surgical methods, for example. There are many possible reasons for lip turning, often caused by mouth breathing, chronic rhinitis and other diseases that lead to poor breathing, or it may be caused by maxillary protrusion that leads to the turning of the upper lip. For the treatment of lip upturning, the first thing to do is to treat the primary disease, you need to go to the hospital otorhinolaryngology or stomatology department for specialist examination, to determine the primary disease and then carry out the treatment of the primary disease. 1. If the upturning of the upper lip is caused by the maxillary protrusion, you can choose to wear braces to correct it, and slowly pull the teeth closer together with the help of braces, thus improving the appearance. 2. If the upturning is more serious and affects the daily life, it is recommended to go to a professional plastic and cosmetic surgery clinic to improve the appearance through surgical procedures.