Muscle strain of the levator muscle is usually caused by jumping from an excessively high position or sudden local force, etc. A severe pain sensation in the lower abdomen will occur. Since the soft tissue gap in this location is relatively small and the soft tissue is relatively dense, once the injury occurs, it will cause excessive local pressure after local bleeding and stimulate local pain, which may radiate upward and downward. Most of the strains will appear local swelling, swelling can be slight or very obvious, and the amount of local injury bleeding as well as the amount of exudate has a direct relationship. The greater the amount of bleeding and exudation, the more pronounced the swelling will be. The most characteristic symptom is that the swelling is painful when the abdomen is moving and the muscles are contracting, and that the swelling is painful when the abdomen is moving and the muscles are contracting, and that the swelling is painful when the abdomen is moving and the muscles are contracting, and that the swelling is painful when the abdomen is moving and the muscles are contracting.