Reoperation three years after melanoma surgery may be a recurrence of metastasis. There is a possibility of recurrence after melanoma is cut off. Therefore, patients need to have regular review after surgery to find out whether the disease has recurrence and metastasis, and if recurrence and metastasis are found, they need to undergo surgery again. Surgery for melanoma cannot completely prevent its recurrence and metastasis. Generally speaking, the recurrence rate of early superficial melanoma after standardized surgery is small, but the probability of recurrence and metastasis is higher if the lesion stage is relatively late and the tumor infiltration is deeper. Melanoma may have distant metastasis around half a year, one year, two years or three years after the surgery, or it may reoccur in the original location. In case of recurrence and metastasis, another surgical treatment can prolong the survival period of patients. Melanoma patients should go to regular hospitals for early and active treatment, which can reduce the possibility of late recurrence.