Abstract: This paper was an investigation into the perceived psychological and organic factors contributing to erectile dysfunction among male adults in Ogbomoso South Local Government Area. A sampled population of three hundred and twenty (320) constituted respondents for the study. A self-structured questionnaire that was validated by four experts in the field of Human sexuality. A reliability coefficient of .85r was obtained using test-retest method of reliability. Descriptive research survey was adopted for the study. In all, two hypotheses were formulated and tested at 0.05 alpha level. Data collected were analyzed by the use of Chi-square (X2) statistics. The result of the study showed that psychological factors were perceived as significant factor responsible for erectile dysfunction and organic factors were also perceived as significant factors responsible for impotence. Based on the findings of the study, the researcher recommends that men should feel free to explain their emotional feelings to their love partners and couples are advised to embark on periodic medical check-up.