The life expectancy of patients with malignant melanoma depends on the stage of diagnosis: 1. For stage I patients, if standard surgical treatment is done, that is to say, five years later, when we count how many of these stage I patients are still alive, the five-year survival rate is over 90%. Therefore, if the patient is detected early, his survival is very good; 2, stage II patients, if a proper surgery is done, the five-year survival rate is more than 60% after treatment; 3, stage III patients, after surgery, the five-year survival rate is more than 30%; 4, stage IV patients, the survival rate in the past five years is less than 5%, so that the worse the stage, the more backward, his survival is The worse and more advanced the stage, the worse the survival. In recent years, the treatment of melanoma has changed drastically, especially the hottest immunotherapy, which has performed very well in melanoma. As a doctor treating melanoma, we also have some sense of accomplishment, unlike in the past, when we couldn’t find patients after five years. So nowadays, we have to give more confidence to the melanoma patient, so that he must receive regular treatment, and then long-term survival is very promising.