This is a multicentre prospective, randomized, double-blind and imitation, positive-drug parallel controlled clinical trail. The objective of this study is to evaluate the efficacy and safety of Huaiqihuang Granule in patients with CKD stage 3 primary glomerulonephritis.

Chronic kidney disease is a common disease that affects health seriously. In some regions of China, the morbidity of this kind of disease is as high as 10.8%. Primary glomerulopathy is one of the pathogenesis of chronic kidney disease, which occupied 50%-60%. However, at present, there is still a lack of effective means for the treatment of primary glomerulonephritis in CKD stage 3. Huaiqihuang Granule is a kind of Chinese herbal medicine compound preparation, Previous researches showed that Huaiqihuang has a comprehensive effect on primary glomerulonephritis. In this study, there were about 40 first-class hospitals participating in. We planned to enroll 466 participants, who will be randomly divided into the Huaiqihuang Granule group (experimental group) and the Valsartan group (control group). All participants will take medication for 48 weeks, and investigators will follow up participates at weeks 0, 8,16, 24, 32, 40, 48.

Inclusion Criteria:

1. Diagnosed as primary glomerulonephritis by renal biopsy
2. Male or female, 18≤age≤65
3. Blood pressure can be effectively controlled at or below 140/90mmHg
4. 30mL/（min.1.73m2）≤ eGFR<60mL/（min.1.73m2）
5. 24-hour urine protein ration ≤ 2.0g/24h
6. The participants must be capable of understanding and comply with the protocol and sign a written informed consent document

Exclusion Criteria:

1. Diagnosed as secondary glomerulonephritis
2. Exposure to corticosteroids, immunosuppressors, tripterygium glycosides, ARBs or ACEIs, without a two weeks washout period
3. Blood pressure < 90/60 mmHg
4. Serum potassium > 5.5 mmol/L
5. Serum albumin < 30g/L
6. Unilateral or bilateral renal artery stenosis
7. Pregnant or lactating women, and participants (including males) who were unable or unwilling to take adequate contraception during the study period
8. Having comorbidities that affect the progression of primary glomerulonephritis (including but not limited to Malignant tumors, Systemic autoimmune diseases, Liver cirrhosis, Diabetes, and Gout)
9. Allergic to the Huaiqihuang Granule or valsartan
10. Participating in another clinical trial
11. Investigators do not think it suitable for a participant to join this study