There are many characteristic manifestations of melanoma in children, which are mainly reflected in margins, sensory abnormalities, color, surface morphology and so on. 1. Edge: the edge of melanoma is more irregular, which can show a jagged shape, and it can also spread and expand in the gap. 2. Sensory abnormality: Melanoma in children will have burning pain and itching, and pressing it with hands will cause obvious pressure and pain. 3. Color: Melanoma can not only show black, but also red, brown, white and other colors mixed, and the overall color is not uniform. 3. Surface morphology: melanoma will protrude on the surface of human skin, and when touched, it will obviously feel the sense of foreign body, and even flaking, and the overall roughness will protrude from the surrounding skin tissues, and even ulceration will occur. There are a lot of characteristics of children’s melanoma, after the appearance of the above symptoms, parents are suggested to take children to hospital for perfect examination and take standardized treatment after diagnosis.