The effect of continuous glucose monitoring system useing at the diabetes mellitus outpatient clinic

INTERVENTION: With the data of CGM, more suitable medication and life habit are suggested to the patient for better treatment. Without the data of CGM, more suitable medication and life habit are suggested to the patient for better treatment. CONDITION: Diabetes Mellitus PRIMARY OUTCOME: Improvement of HbA1c; Improvement of glucose movement; Decrease of hypoglycemia INCLUSION CRITERIA: 1.Patient whose HbA1c is 6.9‐9.4% for three months. 2.Patients doing nutrition and exercise therapy. 3.Patients doing insulin therapy excluding BOT.