Aim: This research was carried out with the aim of determining of the impact of diabetic training given to the patients with Type 2 on the health belief, level of knowledge, and management of diabetes. Methods: The sample of this study consisted of 128 patients, 60 of them experiments and 68 of them controls. A 6-month educational program, including diabetes training booklet and group interviews and telephone communication and consultancy prepared in the direction of health belief model were applied to the patients in experiment group, and routine control were made for the patient in control group. Results: It was found out that the intervention carried out provided a positive changing in health belief about diabetes, and that it increased the level of knowledge, and that it affected positively the management of the diabetes (P < 0.01). Conclusions: In this respect, the training of the diabetes and consultancy by telephone contributed positive diabetes management and life quality.