The purpose of this study was to examine the correlation of chronic prostatitis with sexual dysfunction and WBC counts on expressed prostatic secretion(EPS) with symptoms of sexual dysfunction. From 2001. 9. 1 to 2002. 3. 31, chronic prostatitis patients(30 examples) treated for more than 4 weeks were compared with normal group(30 examples) about hypoactive sexual desire disorder, erectile dysfunction, orgasmic disorder and hematospermia. We investigated sexual dysfunction according to the degree of prostatitis, improvement rate of prostatitis and sexual dysfunction. Chronic prostatitis patients compared with normal group were increased significantly in decreased libido(73.3%), erectile dysfunction(51.1%), orgasmic disorder(48.7%) and hematospermia(16.7%). In WBC very many/HPF group compared with others. though sexual dysfunction was highly revealed, but there was no statistic significance. In improvement rate of prostatitis, total improvement rate was 76.7%, WBC 10-30/HPF group 77.8%, WBC many/HPF group 72.8% and WBC very many/HPF group 80%. But the medical cure effect was the highest in WBC 10-30/HPF group. In the improvement rate of sexual dysfunction, total improvement rate was 68.5%, hematospermia 100%, decreased libido 90.9%, erectile dysfunction 67.4% and orgasmic disorder 60.3%. As a result of considering the relation with improvement rate of prostatitis and sexual dysfunction, there was a statistical significance at the erectile dysfunction. orgasmic disorder. The results showed the chronic prostatitis had effects on sexual dysfunction but there was no correlation between the degree of chronic prostatitis with sexual dysfunction. It also showed that the treatment of prostatitis had effects on improvements of erectile dysfunction and orgasmic disorder.