Purpose: The purpose of this study was to evaluate the effects on obesity of nurse education using the short message service (SMS) of cellular phones and wire Internet. Method: Forty patients in an experimental group, which was assessed pre- and post intervention, completed this study. The patients were divided into two groups according to degree of obesity. The goal of the intervention was to keep blood glucose concentrations close to the normal range. The intervention was applied weekly for 3 months. Participants were requested to input the blood glucose level everyday at http://www.biodang.com by cellular phone or wire internet. The researcher sent optimal recommendations to each patient using SMS of cellular phones and wire Internet. The plasma glucose levels and serum lipids were measured before and after the intervention. Results: After 3 months of education, Glycosylated hemoglobin (HbAlc) decreased by 1.4% in non-obese patients and 0.7% in obese patients. Fasting plasma glucose (FPG) decreased 22.6mg/dl in non-obese patients and 22.3mg/dl in obese patients. Two-hour plasma glucose (2HPG) decreased 97.0mg/dl in non-obese patients and 67.8mg/dl in obese patients. Conclusion: These results indicate that a nurse SMS intervention would improve HbAlc, FPG, and 2HPG in both non-obese and obese patients.