Black patches on the soles of the feet are mostly considered to be caused by nevus, melanoma and other diseases, and physical therapy, surgery, radiotherapy and other methods should be taken to address the cause of the disease. 1. Nevus: black patches on the soles of feet are considered to be caused by nevus, and patients can take physical therapy, such as CO2 laser therapy, YAG laser therapy, cryotherapy and so on, in combination with their own conditions. Some patients can also take surgical treatment, such as nevus excision, skin flap suture surgery. 2. Melanoma: black plaques on the soles of feet are also considered to be melanoma, and patients can take surgical treatment, such as surgical resection of primary foci, regional lymph node dissection, etc. Patients can also cooperate with radiotherapy and chemotherapy, so as to improve the prognosis and the quality of survival of patients. There are many reasons for black plaques on the soles of the feet, so we suggest that patients clarify the cause of the disease in time and take relevant treatment measures under the guidance of doctors. In daily life, avoid scratching the lesions and reduce friction. If there is any discomfort, you need to go to the hospital in time.