Kidney diseases that cause low urine output include kidney stones, renal failure and acute interstitial nephritis. 1. Kidney stone: If the stone enters the junction of renal pelvis and ureter, when it causes severe obstruction, or when it causes acute complete obstruction. This may lead to decreased urination or even anuria. 2. Renal Failure: As the glomerular filtration rate decreases and glomerulosclerosis occurs, the kidneys filter less blood, so less urine is produced. 3. Acute interstitial nephritis: Renal interstitial damage caused by various reasons, so that the epithelium of the renal tubules is detached and loses its function, or involves the glomeruli, so that the glomeruli lose the function of excreting toxins and excess water, and there is a decrease in the amount of urine. There may be other reasons for low urination, so patients are advised to consult a doctor in time to clarify the reasons under the doctor’s guidance and follow the doctor’s instructions for treatment.