The invention provides a method and a system for controlling a host computer with a display function. The method comprises the following steps: analyzing controllable options in a user interactive interface displayed on the host computer, and sequencing the controllable options in the interface according to preset rules; setting one of the controllable options to be a default selected option, and establishing a corresponding relationship between the default selected option and a remote controller; controlling the host computer to sequentially select the controllable options displayed on the host computer by the remote controller; and finally starting the selected controllable options by the host computer. In the invention, a complex control function can be realized by the design of combination of the remote controller and the interface of the host computer as simple as possible so as to maximally reduce the control burden of a user.