Children can drink water and urinate a lot, the causes mainly include uremia, diabetes mellitus: 1, suffering from symptoms caused by uremia, uremia will cause thirst as well as drinking more water, the amount of urine is also very much the symptom. The density of urine is lower, and low specific gravity urine occurs, you can test the body’s pressurization hormone level. If the level of pressurized hormone is obviously low, basically diagnosed as a result of uremic avalanches, the need to apply pressurized hormone treatment; 2, suffering from diabetes caused by the symptoms, the child suffering from diabetes will also cause more water, as well as more urine, there will be a better appetite for food and significant weight loss, you can test the blood glucose to confirm the diagnosis. If the diagnosis of diabetes, need to apply insulin and other drugs in a timely manner.