Posterior cervical spine surgery is a common surgical procedure for cervical spondylosis. In case of localized use of endoprosthetic fusion, the surgery can be maintained for a longer period of years, but in case of unforeseen circumstances, the maintenance time will be shortened, and another surgery may be needed. 1. Long-term maintenance: If the patient has a good surgical result, pays more attention in normal life, and the position of the endoprosthesis is still good after 2 years of postoperative follow-up, while the fusion has been completed, this type of posterior cervical spine surgery can maintain stability for a long period of time. 2. Short-term maintenance: with age, or the occurrence of re-injury (such as trauma, fall, etc.), as well as the occurrence of diabetes mellitus, hypertension, malnutrition, etc., there may be a certain degree of delay in localized osseous fusion, and the time of maintenance will be greatly reduced. In conclusion, the maintenance time of posterior cervical spine surgery varies from person to person, and it is recommended that patients emphasize rehabilitation training in the middle and late stages of postoperative recovery, so that their physical fitness can be improved through quantitative training, and ultimately achieve the desired therapeutic effect.