ShenYanXiaoBai granules is a traditional Chinese herbal medicine, It is used widely for the treatment of proteinuria caused by various kidney diseases. This study investigated the mechanism of Shenyan Xiaobai Granule in the treatment of nephritis proteinuria. 100 male wistar rats were divided into a blank group (n = 20) and a nephropathy group (n = 80) using random number table after 1 week adaptive feeded. Rats were injected with adriamycin (6.5 mg/kg) via the tail vein to induce nephropathy except for blank group. Every rat's urine protein was checked with urine protein dipstick test after three days that showed all rats in nephropathy group were successful modelled. Nephropathy group was divided into model group, benazepril group, ShenYanXiaoBai low dose group, ShenYanXiaoBai high dose group equally. Blank and model group were given distilled water 2 ml as control, then benazepril group received benazepril 0.90 mg/kg, ShenYanXiaoBai low dose group received ShenYanXiaoBai granules 1.80 g/kg as high dose group was given 3.60 g/kg, gavage for 6 days a week last for seven weeks. Urinary albumin/urinary creatinine were measured in seventh day every week. Three rats were randomly selected from each group to be executed in 3th and 5th weekend to detect the mRNA and protein expression level in kidney. The rest rats were as well. The therapeutic effect of ShenYanXiaoBai high dose group was better than the two other treated groups from the 5th week to the 7th week, the comparison had a significant difference. The therapeutic effect of benazepril group was better than the ShenYanXiaoBai low dose group in the 7 weeks and the comparison had a significant difference.