Pneumatic valve and carrier rocket

The embodiment of the invention provides a pneumatic valve and a carrier rocket. The pneumatic valve comprises a valve body assembly, an air cylinder, a moving assembly, a first piston and a second piston, the valve body assembly comprises a medium cavity, a first opening, a second opening and a third opening allowing the moving assembly to penetrate through. The first end of the moving assembly is located in the medium cavity, and the second end penetrates through the third opening and is sequentially connected with the first piston and the second piston. The first piston is used for moving in the first containing cavity to make contact with or abut against the first end wall of the air cylinder under the first pressure condition, so that the first end of the moving assembly moves from the state of blocking the first opening to the position with the first design distance from the first opening. The moving assembly is used for moving under the second pressure condition, so that the first end of the moving ass