If there are high-risk factors after Stage I endometrial cancer surgery, radiotherapy is needed, which is mainly related to the patient’s own condition and the duration of the disease. After Stage I endometrial cancer surgery, if the pathology proves that endometrial cancer is only limited to the endometrium and does not involve the superficial muscular layer of the uterus, and the patient himself is weak or has poor heart function, then radiotherapy is not suitable. However, if there are high-risk factors, such as lymphovascular interstitial infiltration, lower uterine segment involvement, and special pathological types, then adjuvant radiotherapy should be given to reduce the probability of recurrence and metastasis. Whether radiotherapy is given after stage I endometrial cancer surgery needs to be judged according to the specific conditions of each patient under the guidance of doctor’s discretion, and the patient should go to the hospital for review regularly after surgery, which is conducive to the recovery of the condition.