A dustproof material device of throwing of reation kettle, be equipped with sealed lid on throwing material device body, will throw material device body and seal, guarantee that the dust is inside throwing material device body, not to floating in the air, it is hopper -shaped to throw material device body, and its dog -house is equipped with rotatable material bag storage rack and transmission shaft, and material bag storage rack is hollow frame construction, and the frame of material bag storage rack frame is equipped with fixed couple, and the sack of material bag can overlap on material bag storage rack frame construction, fixes the material bag on material bag storage rack through fixed couple, the middle part of throwing material device body is equipped with the horizontal atomizing shower head of symmetry, the vertical shower head that atomizes, the lower part of throwing material device body is the induced air mouth. The utility model discloses a material process operating time is thrown to material bag storage rack and atomizing shower head and induced air mouth structure, reducible workshop, has solved and has thrown material in -process dust release problem, guarantees the accuracy of raw and other materials input amount, has improved the workshop production environment, has reduced the manufacturing cost of enterprise, has improved rate of equipment utilization.