Neck stretching, usually 1-2 weeks to recover, the details are as follows: first, mild neck stretching: usually need about a week to fully recover, the cervical spine range of motion will not be abnormal changes; second, serious cervical stretching: will cause severe neck pain, cervical spine activity is limited, there is local swelling, skin temperature increases, and even cervical spine is fixed posture, taking X-rays will sometimes find Misalignment of the cervical spine joints. Early repositioning and fixation can gradually relieve clinical symptoms, and it usually takes about two weeks of rest to fully recover. Patients should usually pay attention to protecting the cervical spine from trauma, otherwise repeated trauma to the cervical spine can easily lead to secondary cervical spine diseases, such as cervical disc herniation, resulting in serious adverse consequences.