Bad shoulder and neck are caused by the following reasons: First, due to bad posture, this cause is the most common among all patients. For example, if the patient sits or stands with his head down for a long time, or has a bad posture in the process of sitting, standing or lying on his back, it will cause the physiological curvature of the cervical spine to gradually straighten or even reverse arch, followed by a series of degeneration of the cervical spine, and degeneration around the shoulder joint will follow. Patients will experience pain, stiffness, unfavorable activities and abnormal noise during activities in the shoulder and neck area. Second, it may be caused by long-term non-exercise. Some patients do not do physical activity for a long time, which will gradually cause muscle atrophy in the shoulder and neck area, making the shoulder and neck area prone to degenerative disease. Third, it is caused by cold. Many patients have inadequate clothing in the shoulder and neck area, or are often exposed to cold wind, which may lead to diseases related to this area. Fourth, it may be caused by excessive fatigue. Some patients often overuse the shoulder joint and neck, which can cause muscle fatigue in the above mentioned areas, which can lead to fatigue injury over time.