The utility model provides a ration device of giving medicine to poor free of charge with adjustable tobacco presses down bud agent, including the casing, install the dosage on the casing, this dosage includes the disk seat, and the upper portion of disk seat is fixed with the valve rod, and the lower part of disk seat is fixed with the feed liquor pipe, and wherein the feed liquor is managed including the extra heavy pipe on upper portion and the tubule of lower part, be equipped with return spring in the extra heavy pipe, the upper end that the valve rod passed disk seat and lower extreme and return spring contacts, valve rod and feed liquor pipe have the feed liquor hole of lining up, having the scale mark on the surface of valve rod and being fixed with the adjustable ring, the drive handle is connected to the upper end of valve rod, drives the handle and connects the drain pipe, and the drive handle is inside to have the passageway and feed through the drain pipe, the tip fixed connection brush of drain pipe. The utility model discloses can realize pressing down ration, accurate the giving medicine to the poor free of charge of bud agent to can reach artifical cup and drench the effect, convenient to use practices thrift the labour, and pesticide residue in the reduction tobacco leaf, is fit for the tobacco industry and uses widely.