The utility model provides a full -automatic maize pollination device, belongs to the selfing pollination of plant breeding field, in particular to maize. Constitute characterized by by the bag body, arcwall face, fixed axle, the funnel body, retainer plate, flexible pipe, pollen chamber, the terminal cover of pistil, the terminal cover fixed connection extended shaft of pistil, pistil bottom mounting circle: the bag body can prevent the foreign pollen entering, the arcwall face can make pollen get into the funnel body, fixed axle and the fixed fixed action that encloses, flexible pipe makes pollen pass through under the prerequisite that does not influence maize growth, the pollen chamber pollen of can keeping in, the terminal cover of pistil guarantees that the pollen of pistil acceptance only is the stamen that comes from self, the terminal cover fixed connection extended shaft of pistil can be fixed the terminal cover of pistil with pistil bottom mounting circle, comes off in order preventing, a full -automatic maize pollination device simple manufacture, maneuverability is strong, and the effect is obvious.