The invention provides a hydraulic drum type brake for a parking mechanism with upper and lower push rods. The hydraulic drum type brake solves the problem that the prior drum type brake is insufficient in brake friction force fundamentally, which comprises a brake base plate, a brake cylinder, an automatically adjusting device for brake clearances, a front brake shoe and a rear brake shoe. The technical points of the brake comprise that the push rods comprise a combined upper push rod and a lower push rod, the upper end of a parking draw arm is hinged together with the upper end of a supporting arm at the upper end of the rear brake shoe, and the middle part of the supporting arm is hinged with the rear brake shoe through a pin roll, a fork horn of the upper front push rod is tensioned on the front brake shoe, and a fork horn of the upper rear push rod is tensioned on the parking draw arm and the rear brake shoe; and the front end of the lower push rod is hinged on the front brake shoe, while the rear end is tensioned in an arc-shaped groove at the lower end of the supporting arm. The structural design is reasonable, the brake shoe is contacted fully with the brake surface of the brake drum to increase the brake friction force, so that the automobile needs no auxiliary parking brake when stopping at a ramp way, and the parking is safe and convenient, thereby not only improving the braking reliability of the parking mechanism, but also prolonging the service life of the brake.