The invention provides a mains supply and solar energy complementary controller, and belongs to the field of a controller. The mains supply and solar energy complementary controller comprises a mainssupply module, a solar panel module and a storage battery and is characterized by comprising a controller, wherein the controller is connected with an infrared sensor for detecting an object, a photosensitive sensor for detecting light strength and a remote control receiver for receiving a manual control output signal. The infrared sensor, the photosensitive sensor and the remote control receiverwhich are controlled by the singlechip controller are arranged in the mains supply and solar energy complementary controller, so that a power utilization mode in a load can be effectively controlled,an electricity quantity can be effectively saved, and the mains supply and solar energy complementary controller is adaptive to environment demands.