Moles on the face are mainly formed due to the aggregation of melanocytes in the skin. According to the difference of the nature of moles, they are clinically divided into intradermal moles, junctional moles and compound moles, among which junctional moles are more superficial, compound moles and intradermal moles are deeper in location and need to choose suitable ways for treatment: 1. Chemical erosion: by applying alkaline agents on the moles to erode away the moles, the alkaline agents will erode away the moles; 2. Laser treatment: including Fractional laser is suitable for junctional nevi, which is less irritating to skin, quick recovery and not easy to leave scars; compound nevi and intradermal nevi are suitable for carbon dioxide laser treatment, which often leave scars; 3. Cryotherapy: treatment by liquid nitrogen or other freezing instruments, which requires time control and is mainly suitable for superficial nevi; 4. Surgical excision: mainly for compound nevi, intradermal nevi, larger The treatment is mainly for compound nevus, intradermal nevus, larger pigmented nevus and nevus with suspected malignant tendency, such as nevus with diameter >2mm, obviously protruding from the skin surface, normal pigmented nevus with sudden accelerated growth, or halo nevus or satellite nevus around the pigmented nevus. After excision, histopathological examination should be performed, and if the pathology diagnoses malignant change, secondary surgery should be performed to enlarge the excision.