Objective; To analyze the symptom discrepancies of chronic prostatitis under different risk factors. Methods; The questionnaires were made by combining a series of modified questions on the basis of NIH - CPSI with other four carefully designed questions o-riented to trace the risk factors of chronic prostatitis. The questionnaires were published on a cyber - forum named " help center of prostatitis" and the answers were collected by e - mails from the patients. The validated answers were catalogued into three groups according to the risk factors they were undertaken. Results: Three symptom groups were within or around the margin of statistically - significant line

which were "Discomfort in (around) the Perineum and anus region" (which can not be explained as pain) (P1

2 <0.05; P1

3 < 0.05 );"Itching or pain within the urethra (P1

2<0.005; P1

3 <0. 005) "and "Voiding symptoms" (P1

2 =0.069; P1

3 =0.052). Conclusion; Patients under different risk factors display different symptoms. Moreover

those distinctive symptoms together with their corresponding risk factors (etc. frequent ejaculation) give us a clue to trace the true origin of this disease.