For patients with malignant tumors, it is a commonly used treatment, which itself will not cause the shortening of life expectancy, when the treatment is ineffective, the disease progresses, which can be due to the shortening of its survival time. 1. Cure situation: for some tumors, such as spermatogonial cell carcinoma, cervical cancer, etc., the effect of radiotherapy is better, and the chances of patients’ cancer recurrence can be effectively reduced, with regular review after radiotherapy to dynamically observe the changes of the condition. 2. Unable to cure: for tumors with high malignant degree, such as brain tumors, etc., radiotherapy has poor therapeutic effect. The therapeutic effect of radiotherapy is poor and cannot reach the effect of radical cure, and the survival of patients is relatively shortened. After radiotherapy, patients should develop the habit of regular review, actively cooperate with doctors in physical conditioning after radiotherapy, strengthen nutritional supplementation and improve their immunity, then the possibility of cancer recurrence is very low, and the survival time of patients will not be affected.