It appears from today's debate about the quality of social work and addiction treatment that largely focuses on the impact of recent various interventions in the hope of being able to alter social work's role in society and also the organizational structure. The debate points to a part of the 1970s social welfare debate. Today's aspirations to establish an evidence-based practice can hardly be expected to solve the social services basic dilemmas is that it always have to do something, despite the many times you cannot get clear instructions on which funds should be used by law or science. Even if you follow the rules and practices based on scientific studies should the importance of various key initiatives to remedy deficiencies in social service work with addicts in large part depend on how, in these initiatives define the term "evidence-based practice" and what steps will be indicated for to develop practice. My starting point was to explore how evidence-based social work in connection with medication-assisted treatment for opiate addiction look, which evidence-based interventions Social Services currently uses in connection with medication-assisted treatment for opiate addiction, as well as how to work with it in the ordinary course of business. The study showed that social services have become better at using these methods in recent years and that today there are more tools available than before. So it is no longer any debate on whether social services should work evidence-based or not, but instead on how to create the conditions for this. The project is ongoing and focuses on the evidence; there is also a discussion of problems and opportunities with regard to bringing research-based knowledge into practice. The criticism highlights deals with such organizational issues, social work, the narrow focus on individual-oriented interventions and "effective practices", user influence and rights issues. However, it is a dilemma that when you suck our direction on the development of effective methods to make it difficult to compile the results of different studies. It is also inherently difficult to apply the results even if studies have been very carefully done. It has not really been able to give any definite answer on research on which one is best for the clients. It is ultimately also doubtful whether these sorts of social work benefit from being standardized. If the guidelines are only going to consist of evidence-based practices, their impact on social work with the abuse probably nevertheless be limited.