This study is a prospective, randomized, controlled clinical trial of a single center in China and plans to enroll 400 patients. 1. Patients with diagnosed gynecological malignancies who underwent pelvic and abdominal lymphadenectomy and required pelvic radiotherapy; 2. Random grouping (A:B=3:1): A. Prophylactic lymphoedema treatment; B. Standard care group; 3. Preventive lymphedema health education was given to patients with gynecological malignant tumors without contraindications before surgery. All patients were randomly divided into an intervention group and a nonintervention group. The intervention group received preventive lymphedema treatment twice a week. 10 times, and the interval between the two treatments was not less than 48 hours and not more than 2 weeks. The intervention measures included four parts: manual lymphatic drainage, skin care, functional exercise, and wearing lymphedema preventive compression stockings. In the nonintervention group, knowledge education and telephone follow-up were routinely conducted. 4. All patients were evaluated for edema, lymphedema symptoms and quality of life 1 day before radiotherapy, every Friday during radiotherapy and every 3 months thereafter. Bioelectrical impedance measurement and leg diameter measurement were used to evaluate edema, the Gynecologic Cancer Lymphedema Questionnaire (GCLQ) was used to evaluate lymphedema symptoms, and the EORTC Quality of Life Scale (QLQ-C30) was used to evaluate quality of life. followed up to 2 years after the end of lymphedema prophylaxis.