The hazards and sequelae of cervical spine needle knife mainly include local infection, local soft tissue ligament injury, local neurovascular injury, local spinal cord injury and so on. 1. Local infection: if the operation does not strictly follow the principle of aseptic technique, local infection may be triggered, resulting in local ulceration, redness and swelling; 2. Local soft tissue and ligament injury: for example, if the needle is too deep or the cutting amplitude is too large, the soft tissue and ligament behind the spinous process or between the spinous processes can be directly damaged, resulting in neck pain and other discomforts; 3. Local neurovascular injury: the wrong direction of needling or cutting of the small needle knife may damage the neurovascular vessels on both sides of the spinous processes, resulting in numbness and pain in both upper limbs; 4. Local spinal cord injury: too deep needling or violent operation of the knife may damage the spinal cord in the vertebral canal, resulting in weakness of the limbs, limitation of movement and other sequelae. If you have any symptoms of physical discomfort, you should go to the hospital in time to consult your physician and choose the appropriate treatment plan.