Conclusion The one-day training course changed participant’s attitude toward mental disorder and lessened their distance to people with mental disorder. However, due to the limited time, it was not very effective in terms of improving knowledge of schizophrenia and bipolar disorder. Both the knowledge and attitude are the cornerstone of delivering better mental health services. In order to respond to the call to integrate mental health service into primary care, more and more attention and resources should be invested into community health service. We conclude that, in the future, in the fight to close the treatment gap in mental health and in the combat against stigma related to mental disorder, community mental health staff are going to play a substantial role. Hence, more long-time training sessions, possible with longer-term follow up or booster sessions, may be needed to be developed to improve knowledge and attitudes among community mental health staff.