The benefit of the diet control in stage 3-5 chronic kidney disease (CKD) is not only to retard the CKD progression, but can also reduce the complications such as hypertension, hyperphosphatemia, hyperkalemia, etc. Recent data pose the question whether conservative management of CKD by means of a low-protein diet (0.6-0.8 g/ kg/day) can be a safe and effective means to avoid or defer transition to dialysis therapy without causing protein-energy wasting, however, also revealed a higher risk of death associated with very low-protein diet (0.3-0.6 g/kg/day). Patients with CKD who are on a protein-restricted diet should be carefully monitored, with close follow-up every three to six months for adequate caloric intake and evidence of protein malnutrition. Therefore, routinely nutritional monitoring, and dietary counseling are required for CKD patients.