Melanoma is not contagious, so transmission does not occur. Melanoma, also known as malignant melanoma, is a skin disease caused by excessive proliferation or malignant proliferation of melanocytes, and the cause of its development is not only related to family heredity, but also related to gene mutation. The disease belongs to skin disease, and does not belong to the category of infectious disease, so melanoma is not contagious. Melanoma is mainly manifested in the clinic as black papules slightly protruding from the surface of the skin, which can gradually increase in size and even form erosion and ulcers. The treatment of melanoma is mainly based on comprehensive treatment, including surgery, chemotherapy, radiotherapy, targeted therapy and immunotherapy. Although melanoma is not contagious, it will cause serious impact on the quality of life of patients, and there is a risk of metastasis in the late stage, so it is necessary to consult the doctor as early as possible and carry out standardized treatment under the guidance of the doctor.