The invention relates to a white material-preventing discharging door for an asphalt stirring pot. The white material-preventing discharging door for the asphalt stirring pot comprises a lifting discharging door which is driven by an oscillating cylinder to oscillate around a central shaft, wherein the lifting discharging door comprises a material door base plate which is fixedly connected with material door wall plates at the two ends; the material door base plate bears a lifting cylinder; the lifting cylinder drives a material door arc plate through a linkage mechanism to do axial motion along a guide sleeve of a guide rod. The white material-preventing discharging door provided by the invention can realize smooth transition of a stirring port wall plate and a material door arc plate, eliminates height difference of the pot body wall plate and the material door arc plate and prevents the white material from remaining at the connecting position of the stirring pot body and the material door arc plate so as to improve the stirring uniformity of the asphalt stirring pot.