Radiotherapy is effective in the treatment of tumors. For patients with inoperable tumors, the first treatment that comes to mind is radiotherapy. Radiotherapy has a certain inhibitory effect on tumors. For patients who are more sensitive to radiotherapy, the tumor will shrink after radiotherapy, but there are also a large number of people who can not tolerate radiotherapy and have nausea and vomiting, lowering of white blood cells, reduction of platelet count, skin ulceration and so on, so it is necessary to choose the suitable treatment plan according to their own situation. For tumor radiotherapy, we need to be careful, we need to go to regular hospitals to evaluate whether there are indications for radiotherapy, and formulate our own radiotherapy plan according to our own situation.