Children clamping their legs is more common in girls, often manifested as the body twisting after the legs are crossed or legs rubbing back and forth against each other, and then there is a tightening of the body, clenching of the fists, face scarlet, breathing faster, etc., in fact, it is through the clamping of the legs of such a way to produce a certain degree of arousal symptoms. It can be connected with excessive washing of the pubic area, or it can be a habit formed as a form of relief from inflammation of the pubic area or pinworm irritation. It can also be a self-repeating stimulus that produces sexual arousal through the first two problems.