An electronic device includes a housing; a flexible display at least partially exposed to an outside through the housing; and at least one processor operatively connected to the flexible display, wherein the at least one processor is configured to: based on receiving a first user input on the flexible display for a sliding operation to expose a second part including at least part of a first part of the flexible display to the outside in a state in which the first part of the flexible display is exposed to the outside, identify an edge area of the flexible display to be slid, control the flexible display to display an indicator in at least part of an area of the first part of the flexible display corresponding to the edge area of the flexible display, and expose the second part to the outside by sliding at least part of the flexible display including the edge area after the indicator is displayed.