The growth of sarcoma on the body may be caused by chemical factors, physical factors, genetic factors and other reasons. 1. Chemical factors: it may be due to long-term exposure to chemical carcinogenic foreign substances such as fuels and organic synthetics, which make the cells lose normal growth regulation function, and thus the phenomenon of sarcoma grows on the body. 2. Physical factors: it may also be caused by ionizing radiation, ultraviolet radiation, minerals and so on. It can make the tumor cells grow abnormally, thus the phenomenon of long sarcoma can appear on the body. 3. Genetic factors: under the long-term synergistic effect of internal and external factors, the susceptible cells in the organism can cause the genetic material to be changed, resulting in the mutation of gene level and abnormal function regulation, which can lead to the abnormal proliferation and transformation of the cells, and then the phenomenon of sarcoma will appear on the body. It is suggested that patients with sarcoma should go to the hospital in time, do the relevant examination, clarify the cause of the disease, and then follow the doctor’s instructions for treatment, so as to avoid delaying the condition.