摘要:Introduction: The number of diabetes patients are increasing. If the blood glucose is not controlled in diabetics, patients will face with complications. Self-care is important to control the blood glucose of diabetic patients and prevention of complications such as neurological complications, heart, eye disease, amputations and so on. Therefore aim of this study is to identify the effect of Continuous blood Glucose Monitoring or CGM on the blood glucose control in type I diabetes. Materials and methods: The study was done on 20 patients chosen from an online data set available in http://www.jaeb-diabetes.net/ . These patients used CGM to test blood glucose and the result of three month test was measured. To analyze the data, the software SPSS 21, independent Mann- Whitney test was used. Results: The results showed that blood glucose in patients of the experimental group reduced significantly rather than patient of the control group in the second and third month. Also, HbA1C of the patients has reduced. Conclusion: The CGM has an effective role in controlling blood glucose and prevention of complications. Therefore it is recommended that educational programs on the use of monitoring blood glucose, such as CGM as a requirement to be developed.