Frequent urination in children is very common, and its causes are roughly as follows. 1, increased urinary frequency caused by increased urination: may be due to drinking too much water and lead to dietary polyuria, especially like drinking tea more often occurs. Urine may also be the body of certain metabolic abnormalities, such as part of the diabetes, uremia patients drink more water, more urine, urinate more often, which requires specialist diagnosis and treatment. 2, local factors: such as frequent urination, but each time the amount of urine is very small, no pain expression when urinating, and no other symptoms, first of all, we should consider the local factors, such as inflammation of the urethral orifice, phimosis, and so on. Most of the children’s circumcision is relatively narrow, which will cause some of the urine stored here, oozing urine alkali and the inner surface of the foreskin metabolism of the shedding of tissue debris gradually formed foreskin scale. Foreskin scum can induce the growth of Bacillus Calmette-Guerin, which can stimulate the inflammation of the inner surface of the foreskin and the head of the penis. Nerve endings on the head of the penis and foreskin are stimulated to produce urination. If the child has increased urination, localized penile itching, pain, redness and swelling of the head of the penis, it is best to see a doctor in time in order to get proper treatment. 3, pinworm stimulation can also cause frequent urination in children: after infection with pinworms, adult worms at night will crawl to the anus near the egg laying, white thread-like worms can be seen during the inspection. Treatment should be given to the child to cut nails, correct the child’s hand-sucking habits, ironing underwear and bedding cover, and take insect repellent under the guidance of the doctor. 4.Neurogenic urinary frequency: It mostly occurs in preschool children and toddlers aged 3-5 years old, and is more common in boys than girls. Such a situation is characterized by excessive urination during the day, can occur during the day drip polyuria urinary frequency, urinalysis is normal, the total volume of urine is not significantly increased, the number of times in the night sleep is relatively reduced or normal. Only frequent urination without urinary urgency and urinary pain, may also be no burning sensation during urination, not accompanied by polyuria and polydipsia, and the total urine volume and no significant increase in the total volume of urine, but also different from diabetes mellitus and uremic dysuria, this cause of frequent urination of babies is due to the child’s mental development is not yet mature, easy to be affected by the outside world, suggestive language, etc., and its control, resistance to stress and the ability to express themselves is still relatively poor. Therefore, any slight stimulation, including the stimulation of the foreskin and pubic area by residual urine, the friction of uncomfortable clothes and pants, the sound of gurgling water, whistling and so on, will cause the baby to urinate. If it is mental factors caused by pediatric urinary frequency, to distract the child want to urinate can be improved. 5, pathological frequent urination may be suffering from infection, stones, tumors, or the presence of foreign bodies, but the pediatric to urinary tract infections as the most. Pediatric urinary tract infections are mostly seen in girls, each time the amount of urine is not much, but the number of urination is significantly increased, and there can be urinary urgency, urinary pain and other symptoms. Due to the pain, the child tends to cry when urinating. In addition, there can be increased temperature, loss of appetite, vomiting, etc. Infants may only have fever without other symptoms, which is easy to be misdiagnosed, and a large number of pus cells can be detected by doing urine routine. Treatment should be under the guidance of the doctor to apply antibiotics and other drugs, give the child more water, let them rest well. Different situations caused by different accompanying symptoms of pediatric urinary frequency, once found that the child urinary frequency, we must find the cause, no matter what the situation can not reprimand the child, but to follow the guidance, so that he consciously overcome, or see a doctor.