The invention discloses a superfine calcined kaolin filled plastic material and a preparation method thereof. The superfine calcined kaolin filled plastic material comprises the following main components: 180-230 parts of resin, 20-45 parts of plasticizer, 5-10 parts of lubricant, 5-10 parts of heat stabilizer, 10-15 parts of titanium dioxide, and 4-10 parts of kaolin. The preparation method comprises the following steps of firstly kneading the resin with all additives, then mixing, after standing for curing, remilling the plastics, and finally rolling so as to obtain the plastic product. Partial titanium dioxide in the plastic is substituted for the superfine calcined kaolin, the plastic filled with mixture of kaolin and titanium dioxide is better than the plastic filled with titanium dioxide in terms of impact resistance, tension strength, bending strength and heat-proof aging property. Furthermore, the cost of the plastic filled with kaolin is greatly lowered, the economic benefit is improved, the application field of the kaolin is expanded, and the additional value of the kaolin is increased.