While using insulin pumps to control blood glucose levels, people also hope to maximize their understanding of blood glucose fluctuations. Typically, a rapid glucose meter is used for monitoring; however, even with multiple tests, it can only reflect the "instantaneous" glucose level at a few points in time, making it difficult to evaluate overall glucose levels. The 24-hour continuous glucose monitoring system (CGMS) can dynamically and continuously monitor a patient’s glucose levels. It consists of three parts: (1) a glucose monitor about the size of a pager; (2) a sterile subcutaneous glucose probe; (3) a software system that records and analyzes glucose data. It measures every 10 seconds and saves an average value every 5 minutes, recording 288 data points per day. It can analyze glucose changes over a 3-day period within the range of 2.2-22.0 mmol/L (40-400 mg/dL). This continuous monitoring helps comprehensively reflect glucose fluctuations, allowing for corresponding adjustments in insulin infusion rates based on glucose levels during certain periods of the day. For example, CGMS can detect nocturnal hypoglycemia during sleep, guiding users of insulin pumps to reduce insulin dosage during this time. Additionally, the dawn phenomenon's impact on blood glucose can be addressed by increasing insulin dosage during this period. Therefore, CGMS helps identify periods of glucose fluctuations that cannot be detected by a glucose meter, such as low or high glucose levels, and these fluctuations can be reduced through adjustments made to the insulin pump. The combined use of these two continuous working devices makes the settings of the insulin pump more consistent with the patterns of glucose changes, thus enhancing the effectiveness of insulin management.