A gear shifting gas valve comprises a valve body, a valve cover, a valve rod, a driving rod, a spring and a valve element, the valve rod penetrates through a valve rod channel, the driving rod is arranged at the driven end of the valve rod, the valve element is arranged in a valve element cavity, a driving sleeve extends out of a front transmission cavity, and the driving rod is in sliding fit with a radial driving groove. The driving sleeve is sleeved with the spring, and the two ends of the spring are matched with the driving rod and the valve element correspondingly; the two ends of the driving rod are in sliding fit with the arc-shaped protrusions and embedded into the gear grooves. When the default state is the first gear, the first air outlet
pipe, the second air outlet
pipe and the third air outlet
pipe are communicated; in the second gear, the second air outlet pipe is communicated with the third air outlet pipe, and in the third gear, the first air outlet pipe is communicated with the third air outlet pipe; in the fourth gear, the second air outlet pipe is conducted; the valve rod rotates by 360 degrees anticlockwise or
clockwise; when the valve rod is in a static state, the two ends of the driving rod are embedded into the clamping grooves respectively. Only one spring is used, the valve rod and the valve element can rotate
clockwise and anticlockwise, gear shifting is achieved, and the hand feeling is obvious during gear shifting.