Cervical decompression surgery is used for patients with spinal cord compression or nerve compression in the neck. Symptoms of incomplete decompression surgery are that the original symptoms have not improved or have improved only slightly. Incomplete decompression of spinal cord cervical spondylosis: There may be abnormal sensation in both lower limbs, lower limbs are heavy and numb, claudication, awkward gait with unsteady walking, chest constriction, and the feeling of stepping on cotton in both feet are not resolved. The muscle strength of the upper limbs is poor, the muscle tone of the limbs is still high, and the tendon reflexes are active or hyperactive. It is also possible that the symptoms of the lower or upper extremities may be partially or completely improved, and the upper or lower extremities may remain in the preoperative state. 2. Incomplete decompression of cervical cervical spondylosis: there is no obvious reduction of neck pain, and there is also a feeling of tightness and stiffness of the shoulders and neck. 3. Incomplete decompression of vertebral artery-type cervical spondylosis: headache and dizziness, nausea and vomiting are also present. 4. Incomplete decompression of nerve root-type cervical spondylosis: there is neck pain and radiating pain and numbness in the upper limbs. The affected limbs continue to be limited in lifting, abduction and posterior extension activities. The numbness may also be reduced, but there is still limited activity. 5. Mixed cervical spondylosis decompression is not complete: there will also be muscle stiffness in the limbs, unsteady walking, easy to fall, there is a feeling of stepping on cotton, double upper limb fine motor completion difficulties. It is recommended to actively seek medical advice and treatment under the guidance of a physician.