Introduction: WHO report that The number of people with diabetes mellitus has risen from 108 million in 1980 to 422 million in 2014.in KSA the prevalence of Diabetes mellitus was 14.4% Objectives: the study Aims to assess the effectiveness of diabetic health education on diabetes clinical outcome ( in term of Hemoglobin,A1C,Weight control and Blood pressure) ,among type 2 patients in Riyadh City capital of Kingdom , Saudi Arabia). Methods: This was comparative cross-sectional observational study deciding to choose two hospitals one with organized health education system embedded within the routine care of the outpatient clinic (University diabetic center) in King Abdul-Aziz university hospital, and the other with on demand health education and compare the out come of care in 200 patients from both hospitals. Result: The study proved that there were differences between the two groups in the University diabetic center scores. where patients had a better understating of diabetes and believed more in the importance of care to control and reduce the chances of having diabetes complications. Also the study showed that patients who received organized health education had a higher self-empowerment. Moreover, organized education will cover most of the topics about the disease. Participants from University diabetic center were more satisfied about their general health which can lead us to assume their health was controlled or improved over time. Conclusion: Health education showed an effect on patient knowledge and understanding of the disease. Believing in importance of care will also increase with health education. In addition, self-efficacy and empowerment will be more in patients who receive health education. But the results showed that having the information doesn't necessarily result in practice and behavior change, glycosylated hemoglobin, body mass index and blood pressure readings did not differ from both hospitals. Also patients' behaviors including diet and exercise are the same in both hospitals. However, future research is required due to the limitation of the study.