Objective: To investigate the effects of Qianlie Shukang Capsule in treating prostatitis. Method : Pharmacological investigations were carried out to study the impact of Qianlie Shukang Capsule on rat's prostate fribrosis inflammation caused by Xiaozhiling and on rat's prostatitis caused by Escherichia coli. Result: Qianlie Shukang Capsule has significant effect for treating prostatitis induced by Xiaozhiling and that induced by E. coli, indicated by prostate weight, leucocyte count and lecithin density(P<0.05 or P<0.01). Conclusion: Qianlie Shukang Capsule can alleviate prostate pathological changes in chronic prostatitis, and is effective in treating bacterial prostatitis incause by E. coli.