Locomotives, grout cars, muck cars and segment cars are the common mining marshaling train which is used in shield tunneling. The traditional mining marshaling train control has a single pneumatic control, this will lead to brake time delay and cannot make the braking stepless adjustment. In order to solve this problem, we have changed the single pneumatic control by doubleacting pneumatic by adding a pressure piping on braking device. This will make the cylinder exhaust quickly, so that the delay problem can be solved. Meanwhile, the cylinders will get stepless air press to make the braking controllable. It will be greatly improve the reliability of the locomotive while braking, and can avoid the braking out of sync. 