The invention discloses an auxiliary operation device for a handheld pneumatic rock drill, wherein an H-shaped track is arranged on a trolley, the trolley is installed on the track, the rock drill isinstalled on the trolley; a traction motor is installed at the tail end of the track, the traction motor output drives a steel rope after reduced by a reducer, the trolley is pulled to carry out the propelled and retracted movement, a rotary cylinder is installed on a working valve of the rock drill; the rotary cylinder can drive the working valve of the rock drill to perform +/-90 degrees of rotation, and the rock drill is started to impact and drill rotationally when rotating forwards, when the rotary cylinder rotates reversely, the rotary cylinder is in a clearing state, airflow is startedto clear debris in the hole; and the possibility of blocking a drill pipe is reduced. After adopting the invention, an operator only needs to align the drill pipe of the rock drill to the drilling position and start, so the labor intensity is reduced; the operator can simultaneously guard two or three sets of rock drills on the same construction trolley, and the working efficiency is improved.