If blood sugar is not properly controlled, long-term high blood sugar may cause heart disease, stroke, retinopathy, blindness, kidney failure, foot necrosis and further amputation, etc. Blood glucose management technology has taken a big leap forward, and a new era of blood glucose management with continuous glucose monitoring (CGM) is emerging! The continuous glucose monitoring device inserts a soft-needle sensor under the skin and records the user's blood glucose value every 5 or 15 minutes. The sensor can push the blood glucose value data to the smartphone, watch or tablet 24/7, and can continuously record blood glucose value readings for 7 to 14 days. The advantages of the device include elimination of the pain of repeated blood sampling from the fingertip, continuous and real-time monitoring of blood glucose trend analysis, and customized high and low glucose alerts and warnings, as well as sharing of blood glucose data for relatives and friends. The advantages of continuous glucose monitoring include eliminating the pain of repeated finger-tip blood sampling, continuous real-time monitoring of blood glucose trend analysis, personalized high and low glucose alerts and alarms, and sharing of blood glucose data to reassure friends and relatives. In addition, the continuous glucose monitor can also be synchronously linked with the compatible insulin pump (automatic insulin delivery system) to create an automated diabetes care system tailored for patients with severe diabetes, solving the need for patients with severe diabetes to carry insulin syringes and worry about their own glucose levels at any time, the time of insulin injections and adjusting the amount of injections, and so on, to set up the disturbance, and can effectively avoid hypoglycemia, hypoglycemia, and hypoglycemia, or the dosage of drugs, which can be caused by overdose of medicine. It can effectively avoid hypoglycemia caused by overdose of medication or the risk of hyperglycemia caused by insufficient dosage. Continuous glucose monitoring device enables users to have more stable blood glucose control, uncover unstable diets and potential risks, and realize automated blood glucose management and diabetes care.