Pain in the shoulder joint can be caused by the following reasons: First, frozen shoulder, frozen shoulder can often lead to pain in the shoulder joint, which can have a significant restriction of movement of the shoulder joint in all directions, which should be investigated and examined early, and early functional exercise and physical therapy in Chinese medicine. Second, rotator cuff tears, when there is a traumatic or degenerative tear in the rotator cuff of the shoulder joint, there can be pain in the proximal end of the shoulder joint, which can be accompanied by functional limitation of the shoulder joint, especially limited abduction of the shoulder joint, and it is necessary to check the MRI of the shoulder joint for early diagnosis and treatment. Third, shoulder impingement syndrome can cause pain in the shoulder joint, and there is an obvious pain arc when the shoulder joint is lifted, so early diagnosis and treatment should be done by examining X-rays, CT and MRI of the shoulder joint.