Lung metastasis of low-grade malignant soft tissue sarcoma needs to be selected under the guidance of a doctor, according to the specific condition, such as surgery, radiotherapy, chemotherapy and other methods. If lung metastasis of low-grade malignant soft tissue sarcoma is found to occur, it suggests that the patient’s disease has entered a clinically advanced stage. It is necessary to consult the relevant departments in a timely manner, improve auxiliary examinations, and evaluate the condition. Patients who meet the indications for surgery can have the lesion resected. If the time for surgery is missed, radiotherapy, chemotherapy, targeted therapy and other methods can be chosen. Low-grade malignant soft tissue sarcoma has a higher degree of malignancy, so it should be detected, diagnosed and treated early to reduce the adverse reactions caused by the disease and improve the survival period.