The temperature sensor is a high barrier and core component of the CGM system, which directly determines whether the measurement results of the CGM system are accurate. In terms of product structure design, the temperature sensor is closely attached to the surface skin to achieve precise collection of surface temperature and provide accurate temperature correction data for the glucose sensor. The flexible probe diameter of the interstitial fluid glucose sensor is less than 0.4 millimeters and can be inserted 5 millimeters below the skin to ensure accurate sensing of glucose concentration in the extracellular interstitial fluid.