The difference between renal insufficiency and renal failure: First, renal insufficiency refers to the damage of kidney function, creatinine, urea nitrogen is elevated, but has not reached the stage of dialysis, the patient still has residual kidney function, it is to protect the residual kidney function and prevent further deterioration of the condition as the main treatment goal. Second, renal failure refers to patients with impaired kidney function, creatinine and urea nitrogen increase, creatinine >707μmol/L, patients have reached the stage of dialysis, when kidney function has been completely lost, its treatment is to carry out dialysis treatment. Modern clinical renal insufficiency has rarely been mentioned, mostly replaced by renal failure, which can be divided into compensated stage, decompensated stage, azotemia stage, renal failure stage, uremia stage, etc.