The common causes of high left shoulder and low right shoulder are as follows: First, functional aspect, the muscle strength of the muscles around the shoulder joints on both sides is unbalanced, with normal muscle strength on one side and reduced muscle strength on the other side, resulting in one high and one low shoulder joint. Through functional training and physical therapy, the balance of muscle strength on both sides can be restored, so that the symptoms of high and low shoulder can be corrected. Second, caused by congenital developmental abnormalities, such as congenital high scapula, resulting in one high and one low shoulder joint, this situation needs to go to the hospital for detailed examination, and if necessary, take surgery. Thirdly, scoliosis is a common clinical cause. Scoliosis causes asymmetry in the shoulder joint, resulting in a high and a low shoulder joint, and when you bend over, you will also see an obvious razor back.