Objective To investigate the effect of Jingui Shenqi pill on unilateral ureteral obstruction (UUO) rats with renal interstitial fibrosis and the expression of p-STAT3 protein. Methods 30 male SD rats were randomly divided into sham operation group, UUO model group, low dose of Jingui Shenqi pill group, high dose of Jinguishenqi pill group, enalapril treatment group as positive control. After intragastric administration on the 14 days, the rats were sacrificed. The obstructive kidney tissues were stained with HE and Masson to observe the pathologic changes. The protein or mRNA expression of typ...