To promote evidence-based diabetes treatment, the Japan Diabetes Society (JDS) publishes “Evidence-based Practice Guidelines for the Treatment of Diabetes in Japan”. The first edition was published in 2004, with revised editions released every three years since. The latest version was published in 2013. The JDS publishes another set of guidelines related to diabetes, the “Treatment Guide for Diabetes”. This is written based on the first mentioned guidelines and is intended to spread the latest scientific findings widely to all doctors in the clinical diabetes field in a style that is understandable and easy for non-specialists to incorporate in their practices. On the other hand, the Certification Board for Diabetes Education publishes “Guidebook of Diabetes Education”, which devotes pages to the details of psychology and behavior of diabetes patients. This paper introduces the newest contents and reviews the psychosomatic aspects of diabetes as presented in these guidelines.