Speed-control switch of double-material speed changing plate

The invention provides a speed-control switch of a double-material speed changing plate. A speed-control switch body is provided with a two-direction switch; a two-direction switch bump is arranged at the middle position of the two-dimension switch; a plastic block is arranged at the speed-control switch body which is located at the lower end of a handle; one end of the plastic block matches with the two-dimension switch; the upper surface of the plastic block matches the handle; a fine tuning knob is arranged at one end of the handle; the speed-control switch body is composed of a base plate and a resistance strip; the devices on the speed-control switch body are arranged on the base plate; and a hollow part is formed in the base plate. The speed-control switch of the double-material speed changing plate is simple in structure; the two-direction switch and a limiting device are additionally arranged on the speed-control switch body, so that the fine tuning and limited-positioning can be done for the reverse