The chance of skin cancer metastasis is almost 0% in early stage and 100% in middle and late stage. Skin cancer belongs to malignant tumors, which will metastasize and spread, only the specific chance of metastasis needs to be determined with the combination of stage and pathological type. Early stage skin cancer is limited and the chance of metastasis and spreading is almost 0%, only a small portion of highly malignant skin cancer may metastasize in early stage. Only a small number of highly malignant skin cancers may develop metastasis in early stage. However, in middle and late stage skin cancer patients, the chances of metastasis are very high, and in late stage, 100% metastasis occurs, and the metastasis occurs in lymph and distal organs at the same time, and the cancer cells are widely distributed in the body, which makes it more difficult to be treated, and the curing rate decreases, and only conservative treatment can be carried out to prolong the survival cycle.