Whether it is necessary to remove a foot nevus or not is a matter of comprehensive judgment, taking into account the location, shape and accompanying symptoms of the nevus. Pigmented nevus on the sole of the foot mainly includes intradermal nevus, junctional nevus and compound nevus, etc. The more common nevus on the sole of the foot is junctional nevus. Junctional nevus is a kind of benign skin growth, usually without any discomfort. If the nevus is flat with the skin, without pain or itching, with clear edges, uniform color and symmetrical shape, and is not accompanied by other uncomfortable symptoms, it may not be removed. However, junctional nevi occurring on the bottom of the foot have a higher possibility of malignant transformation and need to be observed. If the nevus rapidly becomes larger, darker or painful within a short period of time, or if the nevus itself grows on a stressed area, has uneven color, asymmetrical structure, has a mild bump or shows symptoms such as rupture, erosion, pain and itching, the lesion should be removed in a timely manner in a hospital. Physical therapy, such as ion laser, is usually used. After removal, pathological testing is usually required to determine whether the lesion has transformed into a malignant melanoma. If this occurs, a second, expanded excision is required and, if necessary, a systemic lymph node screening is performed. It is necessary to enhance local cleanliness and avoid irritating factors such as scratching and picking to prevent secondary bacterial infection and expansion of the lesion area.