Excessive urination, or frequent urination, is very common in children. There are many causes of frequent urination, but they can be divided into two main categories. That is, pathological (caused by disease) and physiological. 1, pathologic urinary frequency to urinary tract infection: pediatric urinary tract infection, each time the amount of urine is not much, but the number of times of urination is significantly increased. When there is inflammation in the bladder, the threshold of nerve sensation is lowered, and the urinary center is in a state of excitement, which produces frequent urination, therefore, frequent urination is an important symptom of cystitis, especially acute cystitis and tuberculous cystitis are more obvious. Others, such as: urethritis, pyelonephritis, vulvovaginitis, etc. can appear frequent urination. Under the stimulation of inflammation, often frequent urination, urinary urgency, urinary pain at the same time, known as urinary tract irritation, commonly known as the “three urinary signs”. 2, physiological urinary frequency in addition to drinking too much water, cold weather, pants do not fit and other life factors: the most common is neurogenic urinary frequency. Neurogenic urinary frequency refers to non-infectious urinary frequency and urgency, is an independent disease of pediatrics, the age of the child is generally 2 ~ 11 years old, mostly occurring in preschool children: the onset of its characteristics for urinary frequency, every 2 ~ 10 minutes, the child urinary urgency, a need to urinate can not be tolerated for a few moments, the smaller children often wet their pants for this purpose, can be secondary to urinary tract infections or pubic eczema. Pediatric neurogenic urinary frequency is mostly unintentionally found by parents. Once found that the child urinate frequently, we must find the reason, that is, do not be nervous to ask the child, and do not make a fuss to ask for a cure, so as not to strengthen the child’s urination.