The reasons for doing nephrostomy with low urine volume include drinking less water, decreased renal function and so on, which can be treated according to the causes, and the commonly used treatments include general treatment, medication and so on. 1. Drinking less water: During the recuperation period, if the patient drinks less water, it will easily lead to less and concentrated urine. If the urine is not discharged in time, it may precipitate crystals and cause stoma blockage. For this situation, it is recommended to drink more water appropriately and take good daily care. 2. Decline in renal function: Decline in renal function will lead to insufficient metabolism, and then the amount of urine produced will be reduced. Any cause of renal insufficiency, accompanied by elevated blood pressure, the use of angiotensin II receptor antagonist antihypertensive drugs, such as valsartan, etc., to control blood pressure; hyperlipidemia, the use of statin lipid-regulating drugs to control blood lipids; edema symptoms are serious, the use of diuretics, such as furosemide, etc., diuretic to reduce swelling. All of the above drugs should be applied under the guidance of a doctor. There are many reasons for low urine output in nephrostomy, if the symptoms persist for a long time, you should consult a doctor as soon as possible and follow the doctor’s instructions for treatment.