The chemical additives of ABS resin have a decisive influence on the specific physical and chemical properties of the finished product. Through the analysis of the components of ABS resin system and the principle of emulsion polymerization, the emulsifiers such as disproportionated rosin potassium soap and sodium alkyl naphthalene sulfonate, as well as the addition of cumene hydroperoxide, dimethyl silicone oil, magnesium stearate, tert-dodecyl mercaptan, N, N-ethylene bis stearamide and other chemicals and the doping of ABS powder were tested to clarify the effect of additives on their physical and chemical properties, and provide a theoretical basis for the optimization of production process.