Large moles on the body can be removed surgically, and many patients have moles on their bodies. A nevus needs to be distinguished from a melanoma, which generally has uneven edges, asymmetrical sides, an irregular shape and a larger size, while an ordinary mole has smoother edges and clearer boundaries. In addition, the surface of melanoma is rougher, and there may be bleeding and ulceration, and the lesion is often higher than the skin, but some of them are difficult to be diagnosed by appearance alone. Some skin moles may become malignant melanoma, so if there are moles in the body, try to treat them by surgical excision, and smaller moles can be treated by laser, but laser treatment is prone to recurrence.