(1) Signed informed consent and aged from 18 to 75 years old. (2) Chronic renal diseases with Glomerular Filtration Rate (GFR) estimated using the CKD Epidemiology Collaboration (CKD-EPI) equation between 15 and 59 ml/min per 1.73 m2 on at least 2 dates separated by at least 90 days but no more than 6 month (the CKD defining window period). (3)Not received other TCM treatment for at least 2 weeks.