The invention discloses a forced caving hydraulic support. A steering mechanism (5), a lifting mechanism (6) and a drilling mechanism (7) are arranged on a base (4) on the hydraulic support, the lifting mechanism (6) is located on the steering mechanism (5), the drilling mechanism (7) is movably mounted on the lifting mechanism (6), and a through hole (11) is formed in the position, correspondingto a drilling rod (72) in the drilling mechanism (7), of a top beam (1). Meanwhile, a groove (13) which extends in the front-back direction is formed in the upper surface of the top beam (1), the through hole (11) is located in the groove (13), and the rear end of the groove (13) extends to the rear end of the top beam (1). In use, the lifting mechanism (6) and the drilling mechanism (7) are matched to drill a top plate, then explosives are filled, thus the top plate at a drill hole (101) can be exploded, and forced caving is achieved accordingly. According to the forced caving hydraulic support, the work amount of workers is reduced, operation safety is ensured, and the supporting effect of a coal face is not affected.