WORK MACHINE

For example, in a work machine equipped with an input device that can selectively assign plurality functions, provide a work machine that can present information indicating the current function assignment without misidentifying the assigned functions and without reducing the visibility of other display information during operation. In a work machine equipped with an input device that can selectively assign any of plurality functions, and a display that shows either a first display screen containing the current function assignment information of the input device or a second display screen that does not contain the current function assignment information of the input device, the controller, when the first display screen is shown on the display and the input device is operated, executes processing according to the current function assignment of the input device. When the second display screen is shown on the display and the input device is operated, it does not execute processing according to the current function assignment of the input device, but instead controls the display to switch the display screen from the second display screen to the first display screen.