How long malignant melanoma can live is mainly related to the severity of the disease, the malignancy of the tumor, treatment and individual patient factors, and cannot be generalized. Early detection of malignant melanoma is beneficial to treatment. If patients are detected early and treated timely, they can usually have a long survival time. And with good care after treatment, some patients can survive as well as normal people. However, if the examination reveals that it is an advanced symptom and malignant transformation has occurred, such as on melanocytes in the skin and its organs, the development of the disease is usually very fast and the treatment is less effective, and the survival time of the patient will be reduced accordingly. Therefore, if a patient’s original mole appears to bulge or increase in size within a very short period of time, or if abnormalities such as itching or ulceration occur. It is possible that it is caused by malignant melanoma, and should be treated at the hospital medical oncology department as early as possible.