If your newborn is urinating excessively, there are two main reasons to consider. First, it is caused by drinking too much milk. If the child drinks a lot of milk, the amount of urine produced will be higher. This is a normal physiological phenomenon and parents should not worry too much about it. If the urine concentration or other indicators are normal, parents can rest assured. Secondly, it is caused by urogenital disorder. If the child has a brain tumor or other encephalitis that affects the central nervous system, which leads to insufficient secretion of antidiuretic hormone, the child will urinate a lot. At this time, the child has a lot of urine and the specific gravity of urine is significantly decreased, the child needs timely treatment, and desmopressin can be applied to the child to improve the symptoms.