Clamping of the covers in a 6 year old child is usually a sign of leg-pinching syndrome. Clamping syndrome refers to a behavior that causes arousal by clamping the legs or rubbing the perineum, and can occur in children from 2 months of age to 8 years of age, and is more common in females. Girls usually engage in leg-holding and quilt-holding behaviors, and boys usually engage in genital touching. The reason for this may be that the body secretes more sex hormones during development and the child will explore his or her body, called auto-erotic behavior, and if the child develops habitual leg-clamping, leg-clamping syndrome will develop. It is also possible that genital itching caused by too tight underwear, eczema, pinworms, encopresis, vaginitis, etc., resulting in the formation of the habit of clamping the legs, clamping the quilt. Generally, the child will do it more frequently at a certain period of time, and after the exploration is satisfied, the frequency will gradually decrease and disappear. If the child is an occasional quilt clamping, parents can not worry too much, but should guide the child to pay attention to the protection of private parts. If the child clips the blanket more frequently, it is necessary to consult a doctor for timely treatment.