The electronic intelligent timer is a set of switch control device in which a single chip microprocessor is the core working together with a electronic circuit. It has an LCD and provides time display, which are used to control the switches of home appliances by day or by week repeatedly during different periods of time. This product is applied to controlling electric heaters, electric rice cookers, drinking water machine, lights with lower cost of electricity. At most 10 sets of switch-off- and-on procedure can be installed per day with the shortest period of time one minute ,the maximum electric current 16A, the total capacity of electric power 2500W at the same time, which makes it an ideal product for modern families and offices.