There are many reasons for low urine output and back pain, chronic prostatitis, prostatic hyperplasia, chronic pyelonephritis, early stage kidney disease may cause it, and it needs to be clearly diagnosed through further examination, including urine routine, urine culture, ultrasound examination of the prostate gland, CT examination of the urinary system, 24-hour endogenous creatinine clearance, urine osmolality, and urinary micro-protein examination. If it is caused by the prostate, you can choose the prostate AnTong tablets, urine clearing tablets, tamsulosin capsule symptomatic treatment for about two weeks, the symptoms can be relieved. If it is caused by chronic pyelonephritis, you can choose sensitive antibiotics, such as furotoxin tablets, sulfadiazine tablets treatment for about two weeks, the symptoms can also be effectively improved. If the symptoms are found to be caused by early stage kidney disease through examination, you can choose medicines such as Jinshuibao capsule and Bailing capsule to treat for 1-2 months before the symptoms slowly improve.