The invention relates to a measuring device and belongs to a volumetric automatic measuring device. The measuring device comprises a shell and a drug hopper and is characterized in that: a drug inlet is formed on the upper plate of the shell, a drug outlet is formed on a bottom plate, and the drug inlet and the drug outlet are distributed on an X-axis in a staggered way and are at a distance of S; the drug hopper is arranged on the shell and is in butt joint with the drug inlet; a drug storage sliding plate, a drug measuring plate and a valve plate are arranged on the upper, middle and lower parts in the shell respectively; the drug measuring plate is fixedly connected to the shell, a drug discharge hole is formed on the valve plate, a drug storehouse and a drug measuring cabin are arranged on the drug storage sliding plate and the drug measuring plate respectively, and the drug measuring cabin and the drug outlet are coaxially arranged; and the drug storage sliding plate is integrated with one end of the valve plate by a connection board, an air cylinder is arranged on the outer side of the shell, and a piston head of the air cylinder extends into the shell and is connected with the connection board. The device provided by the invention solves the problems of manual operation, large labor amount, low efficiency, weighing precision affected by human factors, large error fluctuation and the like of the traditional medicament loading and measuring, and is mainly applied to automatic or semi-automatic pressing production lines of explosives.