The incidence of vitiligo for children is becoming higher and higher. It is reported that nearly half of patients suffered vitiligo since their childhood, so the childhood is the peak time of vitiligo morbidity. According to the patient age, the age group of 10-30 years old is the predilection time of vitiligo. 50% of these patients are attacked when they are 10-20 years old. And nearly one third of them are attacked when they are 10 years old.