The invention provides a slush-molded PVC material for automotive trim skin. The slush-molded PVC material is prepared from suspension method type PVC resin, polymer resin, diacetyl epoxy plant triolein, Malay pimaric acid zinc, zinc stearate, calcium stearate, hydrotalcite, tetra[beta-(3,5-di-tert-4-hydroxyphenyl)propionic acid] pentaerythritol ester, phosphite ester, 2-hydroxy-4-n-octyl epoxide benzophenone, oleamide, pentaerythritol, inorganic pigments and an assistant. The invention further provides a preparation method of the slush-molded PVC material for the automotive trim skin. Suspension method PVC is adopted, powder completely and thoroughly absorbs polymer liquid resin oil, and the flowing state of the powder is kept. According to the method, dioctyl sebacate, adipic acid trimethylene glycol ester, trioctyl trimellitate and tridecyl trimellitate are adopted, no orthophthalic resin is adopted, the slush-molded PVC material is environmentally friendly, healthy and safe, and the international environmental health requirement is met.