The invention relates to the technical field of explosion-proof diesel engine vehicles, in particular to a positive and reverse logic double-loop braking control system. The problem that a parking brake of an existing downhole two-wheel-drive trackless rubber-tyred car is only designed on a front axle of the car, and when a braking friction plate of the front axle is excessively abraded, a car sliding accident is likely to occur when the downhole two-wheel-drive trackless rubber-tyred car is parked on a ramp is solved. The positive and reverse logic double-loop braking control system comprisesa hydraulic pump, braking energy accumulators, a double-loop prefill valve, a pneumatic control brake valve set, a relay valve, a front axle parking brake and a front axle driving brake and further comprises a positive and reverse logic double-loop foot braking valve and a rear wheel driving and parking integrated brake. Through the positive and reverse logic double-loop braking control system, front wheels and rear wheels both have the parking braking function, the problem of ramp car-sliding caused by the fact that the brake on the front axle is damaged and loses efficacy when the downholetwo-wheel-drive trackless rubber-tyred car without a rear wheel parking brake operates in a mine with the large gradient and the long distance is eradicated, and the safety and reliability performanceof a vehicle braking system is improved greatly.