Leg pinching, the medical term for leg pinching syndrome, is a behavior that causes arousal by pinching the legs or rubbing the perineum, which occurs in children aged 1 to 3 years old, and is more common in females. It is mainly caused by local stimulation and psychological factors. Psychological treatment is the mainstay, and the prognosis is mostly good. 1. Local stimulation: when the pubic area is unclean and the underwear is too tight, it will cause stimulation and produce the behavior of clamping the legs. We should pay attention to the hygiene of the perineum, keep it clean and dry, and wear loose underwear. 2. Psychological factors: when children lack parental care, family atmosphere is tense, lack of toys, due to the emotional inability to get satisfied, they will find their own stimulation through the action of clamping the legs for emotional catharsis. At this time, parents should pay attention to the child’s emotional and psychological state, and give them more warmth. 3. Treatment: It can be treated by removing local stimuli and home care, and mainly focuses on behavioral therapy, cognitive therapy and other psychological treatments. Early detection, diagnosis and intervention are important to the prognosis of leg pinch syndrome, so it is important to go to a professional hospital in time and follow the doctor’s instructions.