Melanoma generally refers to malignant melanoma, a highly malignant tumor that produces melanin. Early melanoma of the nails usually manifests as a sudden increase in the size of the black lines or dark brown lesions under the nails, and is most commonly seen in middle-aged and elderly people. If patients notice black lines on individual nails or ulceration underneath the nails, they should consider this as the cause more often. Once the nail melanoma is diagnosed, the patient must be treated in time. Clinical treatments for melanoma mainly include surgery, radiotherapy and traditional Chinese medicine.