Electric heater is a basic teaching tool that provides a heat source in chemistry experiments. It converts electrical energy into thermal energy and is equipped with a temperature adjustment knob to accurately control the heating temperature. It also has anti dry burning protection function. In teaching, it is commonly used for experiments that require stable heating, suitable for middle school chemistry laboratory classes. Compared to alcohol lamps, it is easier to control temperature and has no open flames, especially suitable for heating flammable reagents or experiments that require precise temperature control. It not only ensures operational safety but also cultivates students' awareness of controlling heating conditions. It is an indispensable heating tool in modern chemistry experiments.