The utility model relates to the technical field of vehicle equipment, in particular to a vehicle square cabin, which comprises a cabin body, a maintenance cabin door and an H frame, wherein the H frame is arranged on the front side of the maintenance cabin door, hinged portions are respectively arranged on the lower end of the two sides of the H frame, the hinged portions are hinged on the square cabin, the distance from the centers of the hinged portions to the outermost side of the lower end of the H frame is smaller than the distance from the centers of the hinged portions to a placement plane of the square cabin. The vehicle square cabin enables the outermost side of the lower end of the H frame not to touch the placement plane of the square cabin during the opening process of the H frame by arranging the positions of the hinged portions of the H frame to enable the distance from the centers of the hinged portions to the outermost end of the lower end of the H frame to be smaller than the distance from the centers of the hinged portions to the placement plane of the square cabin, even though the front end of the square cabin does not need to be raised, the lower end of the H frame also can not be blocked by the placement plane of the square cabin not to be opened, and the maintenance cabin door can be automatically and rapidly opened, thereby promoting to achieve the purpose of rapid mobility of the vehicle square cabin when being used, and enhancing practicability of the vehicle square cabin.