Shoulder joint ringing may occur when the shoulder joint moves, such as when the shoulder joint moves within a certain range, or when the shoulder joint moves violently within a large range. There are usually several reasons for this condition: 1. Physiological reasons, as the shoulder joint structure is a relatively closed cavity, during intense or large-scale activities, the pressure inside and outside the cavity changes dramatically, resulting in pressure relief and a ringing sound. 2. With symptoms of frozen shoulder, inflammation of the soft tissues around the shoulder leads to pathological changes, such as hyperplasia and hypertrophy of the shoulder capsule, ligaments and tendons, and ectopic ossification. The hyperplasia or ectopic ossification of tissues during activity can lead to severe friction with the shoulder joint bone, resulting in friction sounds. 3. With symptoms of shoulder arthritis. This includes degenerative osteoarthritis or traumatic arthritis caused by trauma. This can lead to deformation and hyperplasia of the shoulder joint bone, which can cause friction and impact sounds between the bones when the shoulder joint moves.