The invention relates to the technical field of heavy type mechanical equipment, in particular to a metering device and a drilling machine using the metering device. The metering device comprises a first wheel gear, a second wheel gear and a speed sensor. The first wheel gear meshes with the second wheel gear, so the angular speed of the first wheel gear and the angular speed of the second wheel gear are the same. The number of turns of rotation a rope sheave can be calculated through the angular speed of the rope sheave within the working time, and then the lowering height and the drilling depth of a hook can be calculated. Compared with an existing metering method, the speed sensor is arranged on a wheel gear outside the drilling machine, so the diameter of a roller, the effective lengthof the roller, the number of winding layers of a steel wire rope on the roller, the number of turns of winding of each layer and the diameter of a drilling line do not need to be considered during calculating, and therefore, the influence on calculation of the steel wire rope on the roller is overcome, the complicated calculation is omitted, the metering result is more accurate, the accurate height reference is provided for drilling personnel, and the logging accuracy rate is improved.