Drinking a lot of water without urine may be due to the lack of water in the body, or the water may be excreted through other ways, or the kidneys may have problems. If the body is in a state of water shortage, after drinking water, it will be absorbed and utilized by other tissues and organs of the body, and the urine filtered through the kidneys will be reduced. If the weather is hot, a lot of sweating, or the patient has vomiting, diarrhea, a lot of water through the body surface or the digestive tract out of the body, through the kidneys to generate urine will also be reduced. If there is a problem with the kidneys, such as renal insufficiency, it will lead to a decrease in urine output, mostly accompanied by swelling and other symptoms. After eliminating physiological factors, if the decrease in urine output persists and cannot be relieved, it is necessary to go to the hospital to complete the relevant examinations and then give appropriate treatment.