Thirty sessions of radiotherapy are acceptable to the human body, as they are generally the usual number of sessions of radiotherapy. If adverse reactions occur during radiotherapy, they can usually be relieved after appropriate treatment. Generally speaking, postoperative radiotherapy for tumors is about 25 times, but if there is no surgery and radical treatment mainly based on radiotherapy, at least 30 times are generally needed, thus it can be seen that 30 times of radiotherapy is acceptable for human beings. Although radiotherapy reaction may occur in the middle and late stages of radiotherapy, it is generally mild and will be relieved after appropriate treatment; however, after 20 or 25 times of radiotherapy for some patients, if the radiotherapy reaction is more serious, then after specific and appropriate treatment, the subsequent radiotherapy can generally be completed successfully. It can be seen that 30 times of radiotherapy is acceptable to the human body, and there is no need to be too anxious, and at the same time, we should also actively deal with the adverse reactions in the process of radiotherapy.