An electronic device and a control method thereof are disclosed. The electronic device includes: a touch screen; a camera; a microphone; and a controller configured to display the execution screen of a predetermined application on the touch screen, control the camera and the microphone to operate upon entering reaction capture mode, acquire a reaction image by capturing a video or still image of a user through the camera upon detecting the user making a facial expression or gesture through the camera or the user's voice through the microphone, and display the acquired reaction image on the touch screen. Accordingly, an image of the user seeing a predetermined screen running on the touch screen can be capture and displayed on the touch screen.