Radiation therapy for gynecologic tumors began in the late 18th and early 19th centuries and has been one of the main treatments for gynecologic tumors for more than 100 years, and at present about nearly 2/3 of patients with gynecologic malignancies need to receive radiation therapy. The basic purpose of preoperative radiotherapy is to shrink the tumor and reduce the spread of tumor cells that may be caused by surgical operation. As for the indications of preoperative radiotherapy, we believe that the following aspects should be given a preoperative treatment: 1. cervical cancer with large local tumor, diameter ≥4cm, which is difficult to operate during surgery; 2. cervical cancer involving more vagina, which is difficult to cut cleanly; 3. endometrial cancer invading the cervix and involving stage II; endometrial cancer uterus >2 months of pregnancy size; and some special types of cancer, such as adenocarcinoma, adenosquamous carcinoma, hyaline carcinoma, and gynecologic malignant tumor. For example, adenocarcinoma, adenosquamous carcinoma, clear cell carcinoma, etc. These special types are more malignant and have a very high chance of recurrence and metastasis after surgery and radiotherapy, so we suggest to treat them with radiotherapy only before surgery; of course, the same problem applies to poorly differentiated carcinoma. Indications for radiotherapy after surgery: 1) metastasis in the pelvis and lymph nodes adjacent to the abdominal aorta; 2) cancer thrombus found in blood vessels and lymphatic vessels, that is, the vasculature is invaded; 3) poorly differentiated cancers; 4) incomplete positive parametrial or vaginal margins; 5) cancer cells invading the deep muscle layer of the cervix; 6) special types of cancer, such as adenocarcinoma and adenosquamous carcinoma; all these types should be treated. supplementation after surgery, we believe that those with one or two factors above, radiotherapy alone is sufficient, and those with more than one aspect should be combined with simultaneous radiotherapy and chemotherapy. In addition, cervical cancer stage IIb-IV and advanced vulvar cancer are indications for radiotherapy.