The common causes of skin pain all over the body are sudden stop of exercise, fever and advanced tumor, as follows: a. Sudden stop of exercise: If the patient exercises for a long time, it will be accompanied by more lactic acid accumulation in the body, once the exercise suddenly stops, it will cause painful symptoms of skin, you can take proper rest, hot compress and massage to promote faster absorption of lactic acid, so as to reduce the painful symptoms of skin. Fever: During the period of cold, due to the fever, the hormone level in the body is disturbed and accompanied by bacterial and viral infection, there will be general weakness, fatigue, pain, and nasal congestion, cough and other symptoms, at this time, it is necessary to take anti-cold medicine to clear the virus and bacterial infection in the body, which can reduce the painful symptoms of skin and flesh. Third, advanced tumor: Some patients with advanced tumor will have local lymphatic invasion by tumor due to the systemic metastasis of tumor cells, which will cause pain and weakness of the skin and flesh.