The possible reasons for drinking more water and urinating less: 1, too much water discharged from other ways, so the urine volume is not much, such as after drinking water, due to the heat of the weather from the skin sweating evaporated more water or accompanied by nausea, vomiting, diarrhea, etc., too much water discharged through the digestive tract, then even if you drink more water, the amount of urine will not increase, too much water discharged from other ways. 2, the appearance of kidney dysfunction, such as The presence of glomerulonephritis, nephrotic syndrome, etc., resulting in a decrease in the filtration capacity of the kidneys, drinking water can not be completely filtered through the kidneys and discharged in the form of urine, which can be accompanied by general puffiness changes, such as swelling of the eyelids or limbs; 3, the emergence of obstructive diseases, such as bilateral ureteral stones, hydronephrosis, ureteral stenosis, urethral stenosis or male prostatic hyperplasia, etc., when the kidneys produce a normal amount of In this case, the kidneys produce normal amount of urine, but the urine is accumulated in the kidneys or in the bladder and cannot be discharged smoothly, so the volume of urine is low.