The invention discloses a self-walking bridge beam-slab chiseling machine. The structure of the self-walking bridge beam-slab chiseling machine comprises a stone remover, a chassis, suspension bars, and drills, wherein the rock remover is arranged inside the chassis; the drills are mounted at the bottom of the chassis; the number of the drills is greater than 2, and the drills are arranged in twocolumns and three rows; the suspension bars are arranged on both sides of the chassis; the stone remover and the drills are matched; the stone remover is mainly composed of a passage port, a ramp plate, a rear plate, a stone tool and a negative pressure system; the passage port is the space between two drills; symmetrical sloping plates are arranged on both sides of the drills in the middle row ofthe drills, and a fan plate is arranged on one row close to the middle row on the drills on both sides; and the negative pressure system is arranged on the two sides of the bottom of the chassis. Theinvention discharges the concrete crushed stone between the drills horizontally through the cooperation of the stone remover and the negative pressure system, so as to avoid the concrete crushed stone generated in the process of chiseling falling down, pressing the chiseled drill bits on the bottom, and friction with each other.