The common causes of sleeping pain one month after shoulder dislocation reset are local nerve or soft tissue damage, shoulder re-dislocation, frozen shoulder and so on. 1. Damage to local nerves or soft tissues: the shoulder joint may have pulled the surrounding muscles and ligaments during dislocation, resulting in damage and a longer recovery time, which may cause pain when sleeping. 2. Re-dislocation of the shoulder joint: not listening to the doctor’s advice and starting shoulder activities before the fixed time is reached can cause re-dislocation of the shoulder joint and sleeping pain. 3. Frozen shoulder: Shoulder dislocation may cause traumatic shoulder stiffness and frozen shoulder, which may also cause pain when sleeping. Sleeping pain one month after shoulder dislocation, there may be other reasons, such as long time braking joint stiffness, etc. If it continues to be unrelieved, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and carry out standardized treatment under the guidance of the doctor, so as to avoid delaying the condition.