The most common causes of high and low shoulders are scapulothoracic disorder, muscle imbalance, scoliosis, pelvic tilt, etc. If accompanied by other uncomfortable symptoms, it is recommended to consult a doctor in time for treatment. 1. Acromioclavicular disease: this is a congenital disease, the typical manifestation is that both sides of the scapula are not equal and accompanied by limited activities, usually related to inflammatory reaction, amniotic fluid abnormalities and other reasons. Patients with hyperacromegaly may be accompanied by obvious high and low shoulders. 2. Muscle imbalance: If the force on both sides of the scapula is not balanced for a long time, especially in adolescents, it is easy to cause muscle tension on the scapula to pull the scapula with different strengths, which will result in the structural abnormality of the scapula, and the manifestation of high and low shoulder. 3. Scoliosis: due to congenital factors or acquired bad habits cause patients to have scoliosis, also due to changes in the shape of the spine, which will show high and low shoulders. 4. Pelvic tilt: If the pelvis is excessively tilted for a long period of time, it is easy to cause the spine to become scoliotic, and the line of force of the bones of the body will change, which will easily lead to the overall imbalance of the force, and then the manifestation of the high and low shoulders will appear. Caused by high and low shoulder causes more, if also accompanied by pain and other uncomfortable symptoms, it is recommended to go to the hospital in a timely manner for examination, by the doctor to clarify the severity of the condition, targeted treatment, usually pay attention to develop good living habits.