Introduction: Sri Lanka is considered a low prevalence country for HIV since the first case was diagnosed in 1986. In the recent years, the country is experiencing an increasing incidence ofHIV among young men who have sex with men (MSM). A record based baseline study was first conducted to collect the demographic and behavioral data among the group. Based on these findings , a self-administered questionnaire was then used at the first visit and 6 months later to assess the effectiveness of routine counseling provided in the sexually transmitted diseases clinic (STD clinic) on changing their behavior and attitudes.