Melanoma is a highly malignant tumor, early detection, early diagnosis and early surgery is by far the better method, because it is not ideal for radiotherapy and chemotherapy, gene therapy is not completely over, vaccine therapy has not yet made a substantial breakthrough, once metastasis occurs the death rate is very high, in Europe and America because of its racial differences, skin color is whiter, skin resistance to sunlight is not as good as brown or In Europe and the United States, because of their racial differences, Asian or African people of black ethnicity have lighter skin color and less resistance to sunlight than brown or black people, and because they like sunbathing, the incidence of melanoma is significantly higher than that of brown or black people (e.g., in Queensland, Australia), and they attach great importance to the malignant changes of melanoma or moles. The Chinese have a relatively low incidence of melanoma, the superficial diffuse melanoma, nodular melanoma and extremity melanoma, compared to Europe and the United States, the extremity type melanoma is more common, after the broadcast of non-committal 2 national consultation melanoma or melanoma nevus has increased significantly, people’s attention to this issue has increased significantly, which is obviously a good side, last week we diagnosed 2 cases of melanoma; on the other hand, also do not therefore straw man, causing psychological panic and great stress to yourself and your family. After all, the vast majority of moles are benign, and the incidence of melanoma in Chinese people is relatively low. Therefore, on the one hand, we should pay attention to it, and on the other hand, we should be proportionate.