Master controller with adjustable height

The utility model relates to the technical field of master controllers, and discloses a height-adjustable master controller which comprises a controller body and a rubber sleeve installed on the surface of the controller body, the upper surface of the controller body is fixedly connected with a first movable rod, and the first movable rod is located in the rubber sleeve. A first threaded rod is in threaded connection with the interior of the first movable rod, a second threaded rod is in threaded connection with the interior of the first threaded rod, and a second movable rod is in threaded connection with the other end of the second threaded rod. According to the master controller with the adjustable height, the height is increased through threads between the two threaded rods and the two movable rods, an operator can rotate the threaded rods to be lifted to a proper position according to the height condition of the operator, and the lower end of the second threaded rod is arranged in the first threaded rod,