The ordinary meaning of the stage of renal failure refers to the stage of chronic kidney function, according to the glomerular filtration rate of chronic kidney disease into Ⅰ-V stage, the glomerular filtration rate of normal people is 90-120ml/min, as follows: 1, Ⅰ stage is relatively good state of kidney function, the glomerular filtration rate is greater than or equal to 90ml/min; 2, Ⅱ stage kidney function began to decline, that is, the glomerular filtration rate began to decline The glomerular filtration rate is 60-89ml/min, which is a mild decline in kidney function; 3, stage III refers to the glomerular filtration rate of 30-59ml/min, which is a moderate decline in kidney function; 4, stage IV refers to the glomerular filtration rate of 15-29ml/min, which is a severe decline in kidney function; 5, the last stage, which is chronic kidney disease stage V, refers to the glomerular filtration rate of less than 15ml/min This is the stage of chronic renal failure or uremia, which often requires renal replacement therapy, including hemodialysis, peritoneal dialysis, and even kidney transplantation to maintain the basic function of the kidney, as well as to maintain normal life activities.