Evaluation of the attitude of patients according to behavior modification stage when they were admitted to hospital for our diabetes educational program and various parameters after they discharged were reviewed.　　We examined the 106 people (53 males and 53 females, average age 66.0 years) who were admitted to our hospital for diabetes education during the period from October 2009 to February 2012. We examined HbA1c levels and measurements taken during the stay in hospital, and 1 month, 3 months, 6 months, 9 months, and 12 months after leaving hospital. Compared with the measured values in the hospital, HbA1c levels measured each month showed a significant improvement (p<0.05). By evaluation of the value according to behavior modification stage, we recognized a rebound tendency in precontemplation groups. The evaluation of patients’ attitude by occupation according to stage of behavior modification revealed a difference more than 2 stages by approximately 10%. From these result, it was speculated that the patient self-management skills made a significant impact on glycemic control after hospital discharge.　　Diabetes educational hospitalization is supported by team members who vary in specialty. It is expected that we can provide higher-quality medical care by each specialist and supporter with a good knowledge.　　Assessment difference of behavior modification stage may appears by each specialty staff member and by changes in physical condition and feeling of the patients. In addition, these causes may change further by difference in the way each specialist deals with the patients. Therefore, we considered it was important to share information and have the mutual confirmation of the evaluation. Now, team medical care is regarded as important. It was suggested that cooperation among the staff members would lead to better medical treatment, and to improvement in patients’ QOL.