The shoulder is always sore, commonly due to weak muscle strength, inflammation around the shoulder joint and shoulder trauma repair period, etc., as follows: First, weak muscle strength: too weak shoulder muscle strength and little participation in exercise in general will cause shoulder muscle atrophy, and the patient will have shoulder soreness symptoms when moving around, usually with obvious fatigue, and after active muscle exercise, the symptoms will be completely relieved; Second, Inflammation around the shoulder joint: due to the restricted activity of the shoulder joint for a long time, it will also cause the shoulder muscles to atrophy, thus manifesting as frequent episodes of soreness and pain around the shoulder, accompanied by restricted shoulder joint activity; third, shoulder trauma repair period: local blood circulation disorder will easily cause venous stasis, and the patient will manifest as prolonged soreness and pain. If the shoulder is always sore, timely treatment should be carried out, which can make the symptoms relieved. Usually strengthen the muscle training and avoid overworking the shoulder muscles and getting cold.