Body Gamma Knife can be used to treat tumors in various parts of the body, such as lung cancer and lung metastatic cancer, primary bone tumors, bone metastases, pancreatic cancer, liver cancer and liver metastatic cancer, and esophageal cancer. Especially, it provides a new treatment pathway for those who cannot tolerate surgery or anesthesia, those whose tumors are located around important organs or large blood vessels that cannot be surgically resected, or those whose tumors are infiltrated, adhered, fixed, and cannot be peeled off. The efficacy of Body Gamma Knife in the treatment of early, middle and advanced malignant tumors in the thorax, abdomen and pelvis is certain. Due to the different selection of cases and different stages of diseases in each treatment center, clinical symptoms and signs are reduced to different degrees after treatment, and the effective rate of clinical treatment is more than 93%. CT/MRI imaging follow-up statistics show that the lesion shrinks, and the effective rate is more than 90%.