PROBLEM TO BE SOLVED: To provide a riding control machine capable of meeting two conflicting requirements including to secure a space within a cabin by widening the cabin width and to minimize an interval between folded booms, with a simple structure allowing a driver to smoothly get on and off the cabin.SOLUTION: A riding control machine comprises a door 15 for getting on/off disposed on side parts of a cabin 10. The door 15 is configured to be vertically opened to form an opening on its lower ends.SELECTED DRAWING: Figure 1