A 61-year-old male with neck and right shoulder pain for 2 years; the patient presented with neck and right shoulder pain without obvious causes, without numbness in both hands, decreased muscle strength, impaired movement and unsteadiness in walking; cervical radiographs suggested a longitudinal bone parallel to the long axis of the cervical spine, at the level of C6 and C7, about 3 vertebrae long, which had not been found on previous examination; previous history of hypertension, denied history of other diseases, denied history of trauma; examination: main neck normal passive movement, pain in the lower part of the neck and the right shoulder. What is the diagnosis? Calcification of the collateral ligament, a degenerative lesion of the cervical spine. The disease itself is mostly asymptomatic and occurs in middle-aged and older men with an incidence of 7.5%, mostly in the lower cervical spine. Calcification of the collateral ligament is usually accompanied by other degenerative lesions of the cervical spine, causing discomfort such as neck and shoulder pain, and is mainly relieved by changing poor lifestyles and physical therapy.