According to an embodiment of the disclosure, an electronic device, comprising, a housing, a flexible display slidably coupled to the housing, and at least one processor configured to control the flexible display to display an execution screen of a first application on a first region of the flexible display which is exposed to an outside based on a first mode, detect a pull-out of the flexible display from the housing, and in response to detecting the pull-out of the flexible display, control the flexible display to display the execution screen of the first application on at least a portion of the first region, and control the flexible display to display an execution screen of a second application different from the first application on at least another portion of the first region and a second region of the flexible display which is exposed to the outside by the pull-out.