Abstract: The present invention provides a digital household automation control system, which utilizes a relay transmitter processing the RF signal emitted out from an actuating input apparatus in converting treatment into an infrared-ray signal, then emit the infrared-ray signal to the proper matching electric appliance and controller to carry out control function, so in the daily life, just need to operate on a single actuating input apparatus can control all the electric appliances; of course, operating on the actuating input apparatus can directly or indirectly adjust and switch the controller via the relay transmitter for increasing the convenience in the daily life.