Weakness of legs after cervical cancer surgery may be caused by malnutrition, venous thrombosis of lower limbs, recurrence or metastasis of cervical cancer, etc. Most of them can recover. 1. Malnutrition: Cervical cancer surgery is more damaging to women, and cervical cancer is a malignant tumor, which consumes a lot, and can cause postoperative malnutrition, anemia and other symptoms of lower limb weakness. Increase nutrition, transfuse blood and albumin if necessary, and the symptoms of weakness of legs can be recovered after treatment. 2. Lower extremity venous thrombosis: surgery, malignant tumors can induce the formation of deep venous thrombosis in the lower extremities. Lower extremity venous thrombosis can lead to numbness, discomfort, weakness and other symptoms. Most of the patients can recover after elevating the lower limbs, wearing elastic stockings, anticoagulation and thrombolytic therapy. 3. Recurrence or metastasis of cervical cancer: if cervical cancer recurs or metastasizes after surgery, the lesion will compress the nerves and blood vessels of the lower limbs, causing weakness of the lower limbs. If chemotherapy and radiotherapy are given, the symptoms can be relieved, but the chance of complete recovery is small. After surgery for cervical cancer, weakness of both legs should consult doctor in time, complete examination under doctor’s guidance, find out the cause and give appropriate treatment.