Prostatic abscess is acute infection in urologic department. The incidence of prostatic abscess has been decreased for development of antibiotics and decreased incidence of gonococcal infection. Currently the pathogen of prostatic abscess has been changed from N. gonorrheae to E. coli, Staphylococcus, Klebsiella, Pseudomonas, Anaerobes and rarely Candida. We encountered 3 cases of prostatic abscess. Pathogens were Klebsiella pneumoniae, and Staphylococcus aureus. Radiologic findings of each abscess were similar in all patients. All patients had been administrated sensitive intravenous antibiotics to each pathogen. Percutaneous needle aspiration and drainage, transurethral resection drainage of prostate were done to each patient.