Generally high-grade sarcomas are more serious than low-grade sarcomas. High-grade and low-grade do not mean the malignant degree of the tumor, and in general, high-grade is more malignant than low-grade. Because of its high malignancy and high risk of recurrence and metastasis, it is more difficult to treat and the symptoms are more severe. It should be noted that both high-grade and low-grade sarcomas are often malignant. Both may have the risk of recurrence and metastasis, and both are easy to destroy the normal tissues of the patients, leading to abnormal function of the normal tissues of the patients. Both high-grade and low-grade sarcomas should be treated in the hospital at an early stage after discovery. It can be treated by surgical resection, radiotherapy and chemotherapy according to the severity of the cancer and whether it has metastasized.