Children absence epilepsy (CAE) is a systemic idiopathic epilepsy, characterized by frequent typical absence seizures, bilateral symmetric synchronized 3 Hz rhythmic spike slow wave discharge. In children, the prevalence rate is 0.4/1 000 ~ 0.7 /1 000, accounting for about 5% ~ 15% of childhood epilepsy; the incidence rate is 5.8 / 100 000 ~ 7. 1/100 000, girls The incidence rate is higher than that of boys; the onset is usually between 4 and 10 years old, and the peak age is 5 to 7 years old.