Moles, also called pigmented nevi, are the most common benign tumors of the skin, and it is recommended to hang up a dermatology consultation. 1. Pigmented nevi are mostly dark brown or black in color and are often classified as mixed nevus, intradermal nevus, junctional nevus and so on. Mostly occur in neck, face, back and other parts of the body, is the most common benign skin tumor, occasionally seen on the surface of mucous membranes, can occur in any normal human body, recommend dermatology consultation. 2. Moles can be treated by surgical excision, carbon dioxide laser, freezing, electrocautery, electrodesiccation, etc. It is necessary to protect the local traumas after removing moles to avoid local secondary infections, which will lead to scarring. It is suggested that patients should not scratch or apply corrosives to remove moles, so as not to irritate the skin and cause inflammation, or even induce malignant changes, and go to the dermatology department of the hospital if necessary, and remove the moles under the guidance of professional doctors.