The survival cycle of malignant melanoma differs according to its stage: 1. Stage I and II melanoma: no lymph node invasion and distant metastasis occur, and clinical cure can be achieved through surgical resection; 2. Stage III melanoma: the five-year survival rate of patients can reach 78%-90%; 3. Stage IV melanoma: the two-year survival rate is about 20%-30%. The data are only the values of clinical statistics, and the survival period of melanoma is related to the patient’s age, the site of disease and the feedback of treatment effect under the effect of many factors.