Abstract: A control box for a monitor includes a rotary type control box rotatably engaged at the front casing and having the function buttons formed at a curved outer surface of the rotary type control box. A boss is formed on an outer surface of the control box at a side opposite to the function buttons for hiding the interior of the monitor for thereby enhancing an outer look of the monitor. A stopper is formed at the front casing of the monitor and contacting with the boss when rotating the control box for limiting a rotation of the control box at a certain angle, for thereby preventing any interference with external items near a monitor because a rotary type control box having various function keys and mounted on a front surface of the monitor is not protruding to the outside of the front casing when operating the function keys.