Leg-crossing syndrome is a recurrent cluster of symptoms characterized by crossing of the legs, pushing them together, twisting of the buttocks, tense expressions, and redness of the face. The episodes, in which the child is conscious and can be terminated when called by a bystander, are generally attributed to a pediatric maladaptive habit, probably related to masturbation in young or adolescent females, but are not accompanied by sexual awareness. It is a habitual action that causes arousal by clamping the legs and rubbing the pubic area. The main hazards of the disease can make children feel inferior, fearful and depressed, affecting their physical and mental health. The treatment of leg-holding syndrome usually uses psycho-psychotherapy, suggests a reasonable diet, pay attention to nutrition, usually local symptomatic treatment, remove the causes supplemented by psychological behavioral guidance. If you find that your child has a habit of leg-holding, parents do not need to be overly nervous, as an overly assertive attitude will increase the child’s further reinforcement of this behavior. Common causes are as follows: 1, parents for children’s legs, perineum too much stimulation, including cleaning care, wash, wipe too often, etc.; 2, pinworms, vulvar eczema, or pants are too tight can cause local itching and friction; 3, calcium deficiency leads to sympathetic stress enhancement; 4, lack of mother’s love for individual children, was discriminated against, emotionally unfulfilled when they will be their own stimulation. Seizures are usually characterized by straightening, crossing, clenching or crossing the lower limbs, and then rubbing or straightening of the legs, accompanied by paroxysmal body twisting, redness, sweating and voice. Diagnosis is not difficult in the presence of clinical symptoms, and attention should be paid to the exclusion of psychological or local factors, mainly by providing psychological soothing and inducement.