Introduction & Objective: Addiction is a complex problem with different psychological, social and familial aspects, which strongly threaten the health of million people, and collapse the social and personal life. The aim of this study was to determine the effective methods of narcotic substances and decreasing demands from the viewpoint of Hamadan people

Materials & Methods: This research was a sectional-descriptive study. The participants consisted of 1456 individuals that were selected by stratified sampling. The data collected through a questionnaire consists of 3 parts I. the demographic characteristics II. the questions about decreasing the demands and III. the questions related to the methods of narcotic substances campaign.

Results: Outcome showed that 60.78% of the participants believe the best method to decrease demands to narcotic substances is the mass media and 51.92% believe to promote the religious believes and 44.5% to change people’s viewpoint about the narcotic substances. 78.85% agreed with using punishments on narcotics devisers and 40.1% agreed with punishment on users.

Conclusion: From the viewpoint of Hamedan people mass media and religious believes effect in attitude of people about narcotic substances abuse and also they believed that punishment of users and opinion devisers were being useful.