The invention discloses a feeding device used for resin treatment. The feeding device comprises a round resin storage can, a discharge tube, piping supports, a first electromagnetic valve, a first flange, supporting bars, a top plate, a screw, a movable block, a connecting block, a compression bar, a piston, a containing mark, a glass strip plate, a second electromagnetic valve, a second flange, afirst gear, a stepping motor, a second gear, a square guide bar, a square through hole and a stepping motor driver. The feeding device disclosed by the invention is reasonable in structure; during resin treatment, feeding can be effectively performed through a feeding structure; after the stepping motor is driven, angular velocity after transmission can be effectively lowered through transmissionof the first gear and a second piston gear, and therefore, each time of feed rate of the movable block and displacement distance of the piston can be reduced; and further, under the matching action between the glass strip plate and the containing mark, feeding accuracy is increased.