In a line shape processing device (201) for receiving an entry of a line shape via a mouse, a touch panel, etc. and processing the line shape, an entry receiving unit (202) receives an entry of information indicating whether a touch pen pushes the touch panel or not, and the pushed position if so. When pushing continuously occurs, a coordinate storage unit (203) stores, for each position included in a line segment joining a place pushed immediately before and a place pushed currently, the y-coordinate value of that position in association with the x-coordinate value of that position. A display unit (205) displays the line shape by acquiring, in an order regarding the x-coordinate values, the x-coordinate values and y-coordinate values stored in the coordinate storage unit (203), and plotting dots at positions within a screen designated by the x-coordinate values and the y-coordinate values.