The invention discloses a novel auxiliary device for electromechanical engineering construction, and belongs to the technical field of electromechanical engineering. The novel auxiliary device comprises a bottom plate, wherein the upper surface of the bottom plate is fixedly connected with the lower surface of a top plate through four telescopic devices, a drilling machine is clamped to the upper surface of the top plate, a drill bit is arranged on the lower surface of the drilling machine, a through hole is formed in the lower surface of the bottom plate. According to the novel auxiliary device for the electromechanical engineering construction, through mutual cooperation of the drill bit, a connecting pipe, an annular pipe, a dust suction opening, a dust discharging pipe, a collecting box, a micro motor, a half gear, a large gear and a torsional spring, waste scraps generated during drilling are comprehensively cleaned and collected; the probability that the waste scraps fly into a power cabinet to bring negative effects to electronic components in the power cabinet or the waste scraps are inhaled by nearby workers to injure the health of the workers is reduced, cleanliness of a construction site is guaranteed, and the practicability of the novel auxiliary device is high.