Chronic kidney disease (CKD) has become an important public health problem that seriously affects the physical and mental health of Chinese people. Nutritional therapy has become one of the important treatments for CKD. Domestic and international guidelines for CKD clinical nutrition therapy have been introduced, and the intake of various nutrients in CKD patients, especially protein intake, has been guided. In recent years, with the continuous development of nutrition assessment and treatment, the content of the guidelines has gradually improved, but some views are still controversial. This article explains the relevant guidelines for the treatment of CKD at home and abroad to provide reference for the clinical nutritional treatment of CKD patients.