Stage 1a of moderately differentiated endometrial adenocarcinoma belongs to early stage, and the treatment of early stage is mainly based on surgical treatment, and those with high risk factors need to be assisted with radiotherapy and chemotherapy after surgery, and it is recommended to go to the hospital for standardized treatment as early as possible. 1. Surgery: Surgery is the main treatment means for endometrial cancer, if surgery can be performed, abdominal cytology, total uterus + bilateral adnexectomy + systematic pelvic and para-abdominal aortic lymph node dissection, moderately differentiated endometrial adenocarcinoma stage 1a can be observed after surgery for those with no high-risk factors; 2. Intracavitary radiotherapy ± pelvic radiotherapy: stage 1a of moderately differentiated endometrial adenocarcinoma can be followed up and observed or treated with intracavitary radiotherapy ± pelvic radiotherapy for those with high-risk factors; the high-risk factors of endometrial cancer refer to the age of more than 60 years old, vascular-lymphatic interstitial invasion, large tumors, and involvement of the lower uterine segment. Moderately differentiated endometrial adenocarcinoma stage 1a, it is recommended to visit the hospital in time for clear diagnosis and standardized treatment to avoid delay.