A display input device includes an operation display portion and a control portion. The operation display portion includes a display portion and an operation detecting portion, the operation detecting portion being configured to detect an operation performed on the display portion. The control portion executes a first display step, a second display step, an identification step, and a display position setting step. In the first display step, an icon display area in which a plurality of operation icons are arranged is displayed on the display portion. In the second step, a keyboard is displayed on the display portion. In the identification step, operated icons are identified. In the display position setting step, a display position of the keyboard displayed in the second display step, is set to such a position where the keyboard is overlapped on a part or whole of at least one of the operated icons.