Sacral tumor surgery that injures the sciatic nerve usually takes about three months to recover. During the recovery period, it is necessary to observe whether the symptoms of nerve compression are relieved or not. Usually, it can be used some nutritive drugs and physical therapy to promote the recovery of the nerve of the patient. Methylcobalamin and vitamin B drugs can be taken under the guidance of the doctor for nerve nutrition, which is helpful for the recovery of sciatic nerve. Usually, patients need to eat a light diet, and eat easy-to-digest food. Also need to pay attention to bed rest, reduce activities, pay attention to urine and feces care. Generally, it can be recovered after about three months, and some patients with serious conditions may need a longer period of time. Sciatic nerve injury patients, if there is discomfort, need to go to the hospital in a timely manner, so as not to delay treatment.