The invention belongs to the technical field of injection molding and particularly discloses an injection molding die for a carbon tank electromagnetic valve protecting bush. The injection molding diecomprises an upper die, a middle die and a lower die, wherein the middle die is positioned between the lower die and the upper die; the upper die comprises an upper die plate, a pressing plate, a pressing plate guide pillar and a mold core fixing plate; the upper die plate is fixedly connected with the pressing plate; the pressing plate is connected with the mold core fixing plate through the pressing plate guide pillar; and the mold core fixing plate is provided with a mold core, an upper die guide pillar, more than two ejection rods and more than two springs. According to the injection molding die, the upper die plate is fixedly connected with the pressing plate; the pressing plate is connected with the mold core fixing plate through the pressing plate guide pillar; and when the upper die and the lower die are assembled, the pressing plate can press product sizing material to play the role of pressing the sizing material, so that the product wrinkling problem is effectively avoidedto improve the product quality.