Patients with cervical spondylosis treated with small needle surgery will not, in general, leave significant sequelae. If the operation is not performed properly in the process of surgery, such as not strictly enforcing aseptic operation, postoperative sequelae such as local infection, vascular injury and neuromuscular injury may occur, as follows: 1. Local infection: This is the most common kind of sequelae, usually caused by improper aseptic operation or the existence of infectious diseases in the patient himself, and abscesses may appear when the infection is serious, requiring incision and drainage. 2. Vascular injury: Local vascular injury leads to hematoma in the neck. 3. Neuromuscular injury: During the operation of small needle knife, the dermal nerve or muscle is damaged, resulting in local numbness and muscle adhesions.