The present invention provides a mobile communication terminal that can execute, by designation by an application program, novel image conversions that cannot be executed in the conventional mobile communication terminal.The mobile communication terminal 20 includes application program execution managing means 211, displaying means 12, image display controlling means 213 and image conversion processing means 214. The image conversion processing means selectively executes, based on conversion-contents designating information received from the application program execution managing means, at least one drawing-type image conversion process of an enlargement process, a contraction process, and a pseudo semi-transparent process for partial hiding by use of a transmissive mask pattern, for the image data subject to image conversion process stored in the image data storage means 211b. The application program execution managing means 211 sends conversion-contents designating information designated by an application program in execution to the image conversion processing means, generates the drawing data from image data after a conversion process returned from the image conversion processing means, and stores the same in the drawing data storage unit 211a.