The invention relates to a poultry feeding device with a continuous quantitative feeding function. The poultry feeding device comprises a feed bin, a supporting rod, a base plate and a treading mechanism, wherein the feed bin is fixed above the base plate by virtue of the supporting rod, the feed bin comprises a bin body, a sliding plate and a first strip-shaped gear, and the treading mechanism comprises a pedal, a first stop block, a first spring, a second strip-shaped gear, a first circular gear, a second circular gear, a supporting plate, a second stop block and a second spring. The poultry feeding device with the continuous quantitative feeding function is delicate in design and smart in structure, and when livestock treads the pedal, firstly the first spring with relatively low elasticity is compressed, the sliding plate slides away and feed in the feed bin is given out, and then the second spring with relatively high elasticity is compressed, so that the first circular gear is separated from the first strip-shaped gear, the sliding plate is reset, and the feed bin is closed. Therefore, food is continuously thrown in, the condition that too much food is thrown in at a time can not appear, the livestock can take more exercise, and health degree of the livestock is improved.