Walking instability after cervical spine surgery is caused by the incomplete recovery of the compressed and damaged spinal cord. If the spinal cord remains unrelieved for a long period of time, it may be due to incomplete decompression or recurrence of the disease. 1. Incomplete recovery of the spinal cord: Walking instability caused by cervical spondylosis is mainly caused by spinal cord spondylosis, which is caused by spinal cord nerve damage due to compression of the spinal cord. As the nerves recover slowly, the symptoms cannot be relieved immediately after cervical spine surgery. Therefore, early unsteady walking after cervical spine surgery is mainly caused by the spinal cord not yet fully recovered from the injury. With the gradual recovery of the spinal cord, the symptoms of unsteady walking can disappear gradually. 2. Incomplete decompression: If the symptoms of unsteady walking do not completely disappear for a long time after surgery, the decompression may be incomplete, such as insufficient decompression of the segmental segments, resulting in the gradual aggravation of spinal cord compression in the neighboring segments. 3. Recurrence of cervical spondylosis: When the symptoms of unsteady walking are obviously relieved or disappear, but after a period of time the symptoms gradually worsen, it may be the recurrence of spinal cervical spondylosis. It is recommended to find a surgeon in time and consult with him/her carefully to understand the symptoms of unsteady walking after cervical spine surgery.