The invention discloses a high-precision dropper used for chemical industry. The high-precision dropper comprises a liquid accumulating cavity, wherein the interior of the liquid accumulating cavity is movably connected with an extrusion plate; the upper surface of the extrusion plate is fixedly connected with a connecting column which penetrates through the interior of the liquid accumulating cavity and extends toward the outside; one end of the connecting column is fixedly connected with a hand press plate; the bottom part of the hand press plate is fixedly connected with a spring; one end of the spring is fixedly connected with the upper surface of the liquid accumulating cavity; the bottom part of the liquid accumulating cavity is fixedly connected with an inclined plate; the positionof the center of the inclined plate is provided with a liquid accumulating opening; and the bottom end of the liquid accumulating opening is fixedly connected with a straw. The high-precision dropperprovided by the invention has the following advantages: the effects of liquid suction and liquid discharging through upward-and-downward movement in the liquid accumulating cavity are achieved; the drive power for the extrusion plate to continuously move up is reached; the effect of liquid suction is improved; the action of fixing the straw is reached; the precision of the dropper can be effectively reinforced; the problem of incapability of reaching the liquid accumulating cavity for the extrusion plate due to the height of the spring can be effectively reduced; and the problems of durabilityand precision of the dropper are effectively solved.