Rice cookers are also called rice cookers and rice cookers. It is a cooker that converts electric energy into internal energy, which is convenient to use, clean and hygienic, and also has many operating functions such as steaming, boiling, stewing and stewing food. Common rice cookers are divided into three types: automatic heat preservation type, timed heat preservation type and new microcomputer control type. Now it has become a daily household appliance, and the invention of the rice cooker has reduced the cooking time of many families. The first rice cooker in the world was invented by Tokyo Communication Engineering Company in Inoue, Japan in A.D. 1950.