A display input device includes: a display panel that displays an operation image; a touch panel portion that is used to detect the coordinates of a fingertip and the coordinates of an actual touch position in a close state in which the fingertip approaches the surface; and a control portion that recognizes an operation image operated by recognizing the touch position, that determines, based on the position of the fingertip in the close state and the track of the fingertip in the close state, whether or not in the close state, the fingertip is in a swing state in which the fingertip swings and that enlarges and displays, on the display panel, the operation image below the track when the fingertip is determined to be in the swing state.