A mobile terminal and an operation control method thereof are provided. The operation control method includes displaying a display screen including a first group of objects corresponding stereoscopic three-dimensional (3D) images and a second group of objects corresponding two-dimensional (2D) images on a display module; receiving a 3D indication input for distinguishing the first group of objects from the second group of objects; and displaying the first group of objects differently from the second group of objects in response to the received 3D indication input so that the first group of objects can be distinguished from the second group of objects. Since the objects corresponding to stereoscopic 3D images are displayed differently from the objects corresponding to 2D images, it is possible for a user to instantly determine whether an image corresponding to a given object is a stereoscopic 3D image or a 2D image.