The moustache at the corner of the girl’s mouth may be a genetic factor or a pathological factor. Genetic factors can be removed by laser hair removal, waxing, and depilatory creams, and pathological factors can be treated with oral medication if necessary. 1. Laser hair removal: Through laser irradiation to penetrate the hair follicle, the melanin in the hair follicle absorbs the energy and generates heat, which ultimately destroys the function of the hair follicle, so that the hair will no longer grow. 2. Waxing: Using the super sticky wax to stick to the moustache at the corners of the mouth, and pulling out the moustache by strong tearing, the process is more painful, and may cause inflammation. 3. Depilatory cream: use depilatory cream as a chemical reagent to dissolve the moustache at the corner of the mouth to achieve the effect of hair removal, but the chemical reagent has a certain risk of allergy. 4. medication: if the hormone level disorders such as polycystic ovary syndrome and other pathological factors lead to increased hair, can be appropriate oral ethinyl estradiol cyproterone tablets and other drugs to regulate hormone levels. Medications need to be taken under the guidance of a physician, if the moustache is more luxuriant, it is recommended to go to a regular hospital to do a sex hormone test, to exclude other disease factors, to clarify the cause of the symptomatic treatment.