Water drink down the normal situation in 30 ~ 45 minutes into urine, because each person’s physique is not the same, so the time is not the same. If an individual’s physical condition is better and the body metabolizes faster, it will turn into urine in a very short time. If an individual’s physical condition is not good and the body metabolizes slower, the time it takes to turn into urine will be prolonged. Water is filtered through the glomerulus and reabsorbed by the renal tubules to form urine, which is excreted from the body. However, urine excretion is affected by whether the body is sufficiently hydrated, bladder function, general condition and other factors, so there is no specific time standard. If the amount of water consumption is normal, but the total amount of urine in 24 hours is less than 400mL is considered oliguria, it is recommended to consult a doctor in time.