The invention relates to the field of plastics, in particular to heat-resistant PVC. The heat-resistant PVC is prepared from, by weight, 40-60 parts of polyvinyl chloride, 5-20 parts of plasticizer, 10-25 parts of a filling agent, 0.5-1.2 parts of fire retardant, 0.1-1 part of antioxidant, 1-2 parts of trimethylolpropane trimethylacrylate and 1-5 parts of heat stabilizer. Compared with the prior art, the novel heat-resistant PVC is good in heat stability and mechanical property and has high competitiveness in the market.