Provided is a conversion method for key operations on a non-touch screen terminal unit, involving the steps of: detecting a click action on a target key on the terminal unit, and acquiring the ID information of the target key; searching position information corresponding to the ID information in a preset profile according to the ID information; and, generating a touch screen event at the position indicated by the position information on the display screen of the terminal unit. With the present method, application programs developed for touch screens can run on non-touch screen terminal units compatibly, and thereby the compatibility of the terminal units is improved.