Low-protein diet can reduce the waste produced by protein metabolism, reduce the high workload of the kidney and lower urea nitrogen and creatinine, thus delaying glomerulosclerosis atrophy and renal failure. A large number of clinical studies at home and abroad have confirmed that continuous low-protein diet therapy can effectively play the following roles: 1. slow down the deterioration of chronic renal failure; 2. reduce the indicators of urea nitrogen and creatinine; 3. alleviate the effects of high blood potassium, phosphorus and purine on the body; 4. reduce the excretion rate of proteinuria; 5. improve the clinical symptoms of uremic renal failure; Through the above research results Continuous low-protein diet therapy is an important part of assisting chronic renal failure that cannot be ignored. Therefore, diet therapy has an equal role with drug therapy in alleviating the progression of renal failure. As patients should pay attention to scientific dietary treatment methods and actively cooperate with drug therapy, only in this way can we protect kidney function from the maximum extent in order to achieve the purpose of delaying the progression of chronic kidney disease.