A method for retransmission of infrared remote control signals is disclosed, including acquiring key code values of a remote control of a second electrical appliance to be simulated and retransmitted by a first electrical appliance; creating a key code value table of remote control pulse signals of the second electrical appliance according to the key code values, and storing the key code value table in a server; downloading, by the first electrical appliance, the key code value table corresponding to the remote control of the second electrical appliance, from the server via a network; and receiving, by the first electrical appliance, key codes that input from the remote control for remotely controlling the second electrical appliance, converting the received key codes into corresponding remote control pulse signals according to the key code value table, and retransmitting the remote control pulse signals to a signal receiver of the second electrical appliance.