The invention relates to a parking foundation brake device for a vehicle. The device comprises a braking clamp, a parking unit brake cylinder, a brake pad and a brake disc. The parking unit brake cylinder is composed of a unit brake cylinder and a parking cylinder; the unit brake cylinder comprises a brake cylinder, a middle body, a brake piston assembly, a brake adjusting mechanism and a yoke; the brake adjusting mechanism comprises an adjusting shaft, a guiding nut assembly, a resistant adjusting assembly and an adjusting nut assembly; the parking cylinder comprises a parking cylinder body, a parking piston assembly and a parking control mechanism; the parking control mechanism comprises a wedged body and a thrust sleeve. According to the device provided by the invention, a gap, between the brake pad and the brake disc, which is enlarged due to abrasion, can be automatically adjusted in the brake process, and the resistance adjusting assembly immediately acts when the brake force reaches a certain limit to resist the brake adjusting mechanism to adjust, so that the gap between the brake pad and the brake disc is still maintained in a normal range. The parking brake force provided by the invention is transferred through a bevel of the wedged body, so that the parking brake force is improved.