The common clinical causes of prostatitis are as follows: 1. sedentary, masturbation, prolonged cycling, etc., can cause congestion and edema in the prostate tissue and complicate non-bacterial prostatitis. 2. upper respiratory tract infection, skin boils and other infectious lesions, bacteria can infect the prostate through the bloodstream and cause bacterial prostatitis. 3. urethritis, cystitis, vesiculitis, epididymitis, etc.