For the infusion of more but less urine, the common reasons are the following possibilities: 1, the patient himself exists in dehydration, although the infusion of more, but relatively there is still insufficient fluid, insufficient perfusion of the kidneys, and therefore not much urine.2, the patient may be in a period of high fever, because of evaporation from the surface of the body, most of the water has been discharged, so there is less perfusion of the kidneys and less urine is produced.3, is there renal failure or different degrees of renal impairment, such patients tend to infusion of more than urine, but may have hair suffocation, shortness of breath or swelling of both limbs, or there is a manifestation of heart failure. Failure or different degrees of renal impairment, such patients tend to infuse more urine, but there may be hair suffocation, shortness of breath or double lower extremity edema performance, or there are manifestations of heart failure, if there are such manifestations, considered as renal failure, should be timely dialysis treatment or diuretic treatment.