In Sweden it is estimated that there is over 350 000 people with known diabetes mellitus. There is a distinction between the two main types, type 1 and type 2 diabetes. A majority of the affected, 85-90% have type 2 diabetes. Primary treatment of type 2 diabetes is a good diet and increased physical activity. Motivational Interviewing is a person-centered counseling technique designed to change people's behavior by enhancing the person's inner motivation and desire to change. The purpose of this study is to evaluate the usefulness of motivational interviewing techniques to promote physical activity in type 2 diabetes. In order to examine the scientific articles, examination protocols were used. There were ten articles that were consistent with the objective and were included, which of eight were quantitative. Of these were seven randomized controlled trials, while one had only an intervention group. Finally, two articles were qualitative. Of the eight quantitative studies, three were able to demonstrate a significant increase in physical activity using motivational interviewing techniques. In the two qualitative studies, participants considered motivational interviewing to be too patient centered and not adjusted to fit diabetes care. In lack of any clear conclusions regarding MI in order to promote physical activity in people with type 2 diabetes, it is in the current situation not possible to recommend the method. However, many of the studies show an increase in physical activity after a MI-intervention. Future studies are required to confirm the usefulness of MI in diabetes care.