4-year-old boy often night urination may be too much water, mental urinary frequency, diabetes and other factors; should adjust the amount of water, improve the psychological state, the presence of diabetes, should also be treated with drugs. 1. Drinking too much water: for example, drinking a lot of water before going to bed will lead to an increase in nocturia; the amount of water consumed before going to bed should be strictly controlled, and the phenomenon of nocturia will improve on its own without any other treatment. 2. Mental urinary frequency: for example, when sleeping at night, excessive mental tension, will cause mental urinary frequency, parents should be more soothing to the child, so that the child’s state of mind is stable, the number of urination at night will gradually reduce. 3. Diabetes: For nocturnal urination caused by diabetes, after diagnosis, glucose-lowering drugs should be used to control blood sugar, such as metformin, and insulin injection should also be used in serious cases. During the treatment period, it is important to follow the doctor’s instructions, safe and reasonable to the child’s medication, do not indiscriminate use of drugs.