The five-year survival rate of rectal cancer with bone metastasis is about 10%~15% after treatment. Rectal cancer is a malignant tumor caused by various factors such as bad dietary habits, sedentary lifestyle, heredity, etc. When the disease develops to the advanced stage, distant metastasis such as bone metastasis often occurs, and at this time, clinical manifestations such as local mass, bone pain, pathological fracture, etc. can appear. The treatment method for this period is mostly non-surgical therapy. For example, radiotherapy and targeted therapy are commonly used. After active treatment, rectal cancer patients with bone metastasis can obtain a five-year survival rate of about 10%~15%. However, the purpose of treatment in this period is to improve the quality of life and prolong the survival time, and the survival time can be slightly prolonged if the patients have a high degree of tolerance to the treatment.