Numbness of feet after lumbar nerve sheath tumor surgery may be due to nerve damage, unrecovered nerve or tumor recurrence. 1. Nerve damage: If the nerve is damaged in lumbar spine surgery, it will lead to pain and numbness of lower limbs. Non-steroidal anti-inflammatory and analgesic drugs such as ibuprofen and meloxicam can be used as prescribed by the doctor, as well as nutritive nerve drugs such as methylcobalamin. 2. Nerves not recovered: the nerves are seriously damaged before the surgery, and the nerves are not fully recovered after the surgery, which causes numbness of the lower limbs, and can be treated with nutritive nerve drugs such as methylcobalamin and vitamin B1. 3. Tumor recurrence: the vast majority of patients will not have recurrence, but some tumor base may remain during the surgery to protect the nerve function of patients, and there may be tumor recurrence after the surgery, and the tumor compression of the nerves will cause numbness of the lower limbs and other symptoms, which may also need surgical treatment. Generally speaking, numbness of the feet occurs after surgery for lumbar nerve sheath tumor, and the symptoms of numbness of the feet will be gradually reduced with the passage of time. Usually pay attention to rest, avoid strenuous exercise and do not overwork. If the symptoms of numbness of the feet continue to be unrelieved or even aggravated, you should go to the hospital in time for review and standardized treatment under the guidance of the doctor. The above medication should follow the doctor’s instructions, not blindly use their own medication.