Automatic infusion set is an improved medical equipment used in clinical medicine.It uses a variety of sensors to realize the information acquisition, and meanwhile,use STC89C52RC single chip as the main control chip . The drug flow rate, expected infusion time and other parameters will be displayed on the LCD after the information collected by the sensor is processed via STC89C52RC single chip . This design will bring about the function of infusion speed, infusion time monitoring, drug liquid temperature monitoring, automatic fluid stop and alarm, which can realize the automatic control of the infusion.