The shoulder is high on one side and low on the other side, also known as high and low shoulder, and its possible causes include long-term bad posture, scoliosis, etc. Its treatment generally includes correcting bad posture, rehabilitation training, brace correction, surgical correction and so on. 1. Long-term bad posture: If you work with your head down for a long time, study, engage in heavy physical labor, etc., and adopt a bad posture, the symptoms of high and low shoulders may appear. In this case, it is necessary to correct the bad posture in daily life, avoid prolonged unilateral shoulder load, strengthen the muscle strength training of the weaker side, and gradually improve the symptoms of high and low shoulder. 2. Scoliosis: The symptoms of high and low shoulders caused by scoliosis need to be corrected actively, and the younger the age of scoliosis correction, the better, the high and low shoulder symptoms caused by adult scoliosis can only be adjusted through surgery. Adolescents with scoliosis need to wear a thoracolumbosacral brace, and if orthopedic treatment fails, surgery is required. When symptoms of high and low shoulders occur, it is recommended to seek medical attention and correction under the guidance of a doctor.