According to the level of glomerular filtration rate, chronic kidney disease can be categorized into 5 stages, and stage 3 means that the glomerular filtration rate is between 30-59ml/min. The principle of its treatment is to assess the cause of chronic kidney disease, the speed of development and active treatment of complications. Because once the patient enters the stage 3 of chronic kidney disease, it will develop progressively and gradually progress to stage 4 and 5 of chronic kidney disease, stage 5 means the stage of renal failure, which requires renal replacement therapy. Patients have a wider range of treatable conditions when they reach stage 3, and may progress to stage 5 in a few months or even years if they are not actively controlled. If the treatment is more effective, it may last for several years, more than ten years or even decades before progressing to stage 5 of chronic kidney disease. Therefore, for patients with stage 3 chronic kidney disease, regular treatment and active prevention and control are important.