The purpose of this study was to, through qualitative interviews, contribute to a deeper understanding of how collaboration between human-treating organizations, which work preventively against drug use among young people in X-municipality, continues in practice. Therefore, we also want to investigate how this collaboration is experienced within four human-treating organizations. These are the police, social services, field group and student health team at school in X-municipality. This was done with the help of nine qualitative interviews in semi-structured form. The results of the interview material were analyzed using organizational theory and previous research. From the results, we could see that collaboration is perceived as an important phenomenon where the organizations collaborate to some extent, but not as much as they would like. Where organizational factors such as regulations, personal interaction and different approaches to the social problem affect the extent to which cooperation takes place.