It refers to the habitual action of rubbing the vulva in children and is a type of childhood neurosis. It can be seen in infants and children at the age of one week, and is most common in girls aged 1-3 years. The clinical manifestations of habitual cross-leg rubbing are: 1, the double lower limbs crossed inward or close to each other, rubbing up and down in a leg rubbing action; 2, sometimes the bath towel or sheet is sandwiched between the legs, both hands hold the bath towel or sheet end, the double lower limbs do stretching and rubbing action, the perineal muscles contract, the perineum produces secretions; 3, the child’s face is flushed, both eyes stare, breathing heavily, there is a sense of masturbation, mostly self secretly carried out, refusing adult intervention, and this abrasion is sometimes very stubborn. This kind of rubbing is sometimes very stubborn. It usually lasts for several minutes or longer before it stops, and after the attack stops, it seems to have a sense of fatigue, and the head and forehead and the whole body can sweat; 4. Even in class or at home can be in the prominent corners of the furniture such as the back of the bicycle seat, the corner of the chair, sofa armrests on their own friction, for pleasure, and even to the extent of “can not extricate themselves”; 5, into adolescent boys and girls also have a similar situation occurs. As parents and children do not know much about this “disease”, it often makes adolescents have a strong inferiority complex, this psychological disorder, affecting the healthy development of adolescent children; 6, the child in the process of the attack, always clear, normal reaction to the surrounding environment, the available will to dominate. The seizure can often be terminated when the child is picked up from bed or changed position, or distracted in other ways. Seizures usually occur under the same conditions, such as rubbing one’s vulva before going to sleep or shortly after waking up or while sitting, and sometimes in the mother’s arms; 7. The child has no signs and symptoms of organic damage to the nervous system. The prognosis is generally good and the intelligence is normal. Sometimes the diagnosis is usually made on the basis of the above clinical manifestations, without the need for EEG examination. Diagnostic criteria: The diagnostic criteria for habitual leg rubbing action in children are: (1) the onset of the attack with legs crossed or pressed against each other, legs making flexion and extension movements, hands making fists or grasping things vigorously; (2) the onset of the attack with red cheeks, eyes staring, and slight sweating on the forehead; (3) vulvar congestion, increased secretion and/or increased labial pigmentation; (4) the attack can be terminated by external stimulation; (4) normal intelligence and no brain grid epileptic waves are issued. In toddlers and children, this bad habit is mainly induced and distracted to make it go away. Some children are triggered by itching due to local irritation and must be given active treatment to correct this bad habit. Washing the vulva every night before bedtime, good personal hygiene, and giving psychological comfort to the child makes him/her fall asleep happily. It can initially be caused by local diseases such as pinworms, eczema of the pubic area or too tight pants, but later it becomes a habit. In a few children, the onset may be related to excessive rinsing (stimulation) of the vulva, so care should also be taken to avoid excessive rinsing (stimulation) of the vulva. When a child has this habit, he or she should not be scolded, but should be induced, diverted, wear loose pants, go to bed not too early at night, and treat local diseases early. If there are pinworms, they should be treated promptly. For teenagers, they should give patient persuasion and education, strengthen physical exercise, do not look at unhealthy images and books, parents should maintain their children’s self-esteem, and keep secrets for him (her). They should not talk about it in front of people, not to mention ridicule, which affects the physical and mental health of the child.