If you drink water but do not urinate, you need to count the amount of water you drink and the 24-hour urine volume by yourself to initially judge whether there is an organic problem: 1, if the body itself is dehydrated, usually do not drink much water or lose too much body fluid, at this time, only a small amount of water can replenish the amount of body fluid lost, and has not yet reached the amount of water replenishment, so it is difficult to produce urine volume in a short period of time, but the total 24-hour urine volume is greater than 400ml or more, and there is no Edema and other phenomena, you need to drink more water again or more rehydration, and observe whether the urine volume is restored. 2, if there is kidney disease, such as renal failure may cause the kidneys do not work, and the water can not be excreted out of the body, while mostly accompanied by swelling of the face or lower limbs, the 24-hour urine volume is about less than 400ml or less, you need to carry out a kidney function test. 3, if there is post-renal obstructive, such as bilateral 3. If there is post-renal obstruction, such as bilateral ureteral stones, ureteral tumors or prostatic hyperplasia, which can cause the urine produced by the kidneys to be obstructed in the body and cannot be excreted, ultrasound examination of the urinary system is needed to understand whether there is hydronephrosis, bilateral ureteral stones and other obstructive pathologies.