The reason why prostatitis this patient will premature ejaculation, may be related to psychological factors, but also may be related to the prostate gland congestion and swelling. 1. psychological factors: prostate patients in sexual life, may lead to the prostate repeated congestion, easy to make the symptoms worse, such as perineal swelling, which will make the patient appear nervous, anxiety and other psychological, it is easy to induce premature ejaculation, may also appear erectile dysfunction, ejaculation pain. 2. Prostate congestion and swelling: In the course of sexual life, the prostate gland is repeatedly congested, which may aggravate the symptom of local swelling, and may cause stimulation to the ejaculatory center of the pelvic floor, which will lead to rapid ejaculation and cause premature ejaculation. Therefore, after suffering from prostatitis, it is necessary to carry out examination and treatment as soon as possible to avoid adverse effects on sexual life.