Computer, auxiliary display equipment and information display method

The invention relates to a computer, auxiliary display equipment and an information display method. The auxiliary display equipment is inserted into a slot formed on a display screen shell or cabinet shell of the computer; whether the computer and the auxiliary display equipment are connected or not is detected, the computer supplies power to the auxiliary display equipment when the computer and the auxiliary display equipment are connected, and data stored in the computer is transmitted to one or more pieces of auxiliary display equipment which are independent of the computer when the computer is in a using state; and a keyboard and/or a screen of the auxiliary display equipment is controlled to operate a computer interface on the screen of the auxiliary display equipment, and the transmitted data stored in the computer is displayed when the computer is in the using state, a standby state, a log-out state or a shutdown state. A low-cost double-screen computer is formed.