Increasing body weight is closely associated with increasing risk for glucose intolerance and type 2 diabetes. Especially, abdominal distribution of weight and visceral obesity also seriously increase the morbidity and mortality. Dietary program including very-low-calorie diet(VLCD) is regarded as most effective in the control of obesity and diabetes, which mainly due to calorie restriction rather than weight loss itself. We are reporting a case of diabetes with obesity whose fast glucose was over 220 mg/dl and BMI was 25.1 kg/m2(fat rate 32.8%, WHR 0.9). She was prescribed VLCD and oriental medical diet program. After 10 days of hospitalization, her glucose level dropped dramatically with 3kg loss of body weight. She has further lost her weight until about 53kg, but the glucose level ceased to go down probably due to loosened calorie restriction.