Whether there is urine after dialysis is related to the residual renal function, if the renal function is well-protected, the patient’s urine output will not be reduced too much, i.e., there will not be no urine; if the patient’s renal function is not well-protected or even completely lost, the urine output will be reduced, and there may be no urine after a long period of dialysis. Dialysis is mainly a replacement therapy for people with renal failure, replacing the metabolic function of the kidneys to excrete metabolic wastes, such as creatinine and urea nitrogen, etc. With the prolongation of dialysis time, there may be a decrease in urine output, but the specifics are related to the individual’s residual renal function. If the residual kidney function is well protected, there may be urine all the time after dialysis; if the residual kidney function gradually disappears through a long period of dialysis, there will be no urine after dialysis. Dialysis is a kind of replacement therapy that needs to be adhered to for a long period of time and needs to be carried out regularly. During the treatment period, eat a light diet and avoid drinking a lot of water.