Excessive urination is a very easy problem to overlook and can be normal in children or in children with very insidious diseases. The most common cause is drinking in too much water. Too much water in the body is the main reason why children urinate too much. Everyday in the child’s diet, not only should we pay attention to the amount of water we drink, but also to the amount of water in the food, such as watermelon, winter melon, oranges and so on are foods that contain a lot of water, eating too much is the same as drinking too much water, which can also lead to excessive urination. Some elderly parents believe that children drink more water has benefits, they desperately irrigate, is an important cause of children urinate more. This part of the child’s excessive urination is physiological. The next is pathological factors, such as uremia, diabetes, etc., can lead to inappropriate polyuria, dry skin on one side, dehydration-like appearance, and a lot of urine all over again. Abnormalities in water reabsorption by the renal tubules can also lead to polyuria. There is also a false polyuria, which is just a psychological reason for frequent trips to the bathroom. Of course, neurogenic bladder is also a cause of frequent trips to the toilet. Finally, the growth and development of a child requires careful parental care, and any small problems need to be taken seriously by parents to avoid serious consequences.