本课题设计了基于单片AT89S52的温度控制系统的设计方案与软硬件实现。采用温度传感器DS18B20采集温度数据，LCD1602显示温度数据。软件开发采用KEIL编程，并用C语言实现温度采集、数据处理、LCD显示，并通过Proteus软件对该系统的各项功能进行了仿真。该系统结构简单、实用性强，具有一定的应用价值。-MCU AT89S52 is designed based on the temperature control system design and software and hardware. Temperature sensor DS18B20 collecting temperature date, LCD1602 temperature display. Software development using KEIL programming, and use the C Programming Language to write each functional subprogram of collecting temperature date ,data processing, LCD display. Various function of the system have been simulated by Proteus software. The system is simple, practical, has a certain application value.