To provide a control panel for machine tools that improves operability and enables even an unskilled person to easily grasp a procedure for moving a screen to a target screen. A plurality of screen data are classified into a plurality of groups and classified into main screen data and sub-screen data associated with the main screen data in each of the groups. A control section displays the main screen data and displays the sub-screen data on a display section according to a type of an input to a plurality of main screen corresponding buttons.