The survival period of cancer cells spreading to the whole body depends mainly on what the specific pathological nature of the cancer cells is. The more malignant the pathological nature is, the shorter the survival period of patients, mostly about 6-12 months. Especially, primary liver cancer, pancreatic cancer and other malignant tumors with very high malignancy and few treatment options. However, lung cancer, breast cancer, prostate cancer, etc., although systemic metastasis occurs, the treatment means are relatively abundant under the current medical conditions. Through radiotherapy, chemotherapy, targeted therapy and immunotherapy, the 5-year survival rate for patients with the above types of tumors is about 20-30%. Especially for inert tumors such as prostate cancer, the 5-year survival rate of patients is above 60%-70%.