Childhood pinch reaction, clinically known as pediatric pinch syndrome. It is a psychological behavioral disorder that occurs in childhood and the cause is not clear. It may be related to factors such as too tight pants, vulvar eczema, pinworm disease, life monotony or sexual development. Due to physical or psychological stimulation, the child develops rubbing the perineum as a habitual action, and treatment is mainly based on psychological guidance. Pediatric pinch-leg syndrome is characterized by a child’s legs being crossed and brought together, or rubbing the perineum at the corner of a chair or table, which can result in flushing and straightening of the eyes. Parents should try to distract their children if they develop pediatric leg-holding syndrome and help them overcome the behavior without scolding or punishing them. At the same time, it is necessary to keep the child’s perineum clean, do not wear tight clothing and pants, if suffering from eczema and other inflammatory diseases, should be treated in a timely manner to eliminate its adverse factors. In addition, you can care more about your child, cultivate a wide range of interests, guide them to participate in outdoor activities, etc., and cultivate good sleep habits of going to bed and waking up.