Using DS18B20 and EP1K30TC144-3 as the design platform, this design achieves the functions of temperature collection, measurement, comparison, processing with good portability. It can be used for most of the current temperature control system. The hardware circuit is simple, the cost is low, the application is flexible, and the temperature measurement precision and conversion speed can meet with the need of most temperature measurement system. This design improves the reliability and stability of the temperature acquisition system.