The invention relates to a deformation-preventive PVC decorative material. The PVC decorative material is prepared from the following raw materials in parts by weight: 100-110 parts of polyvinyl chloride, 15-20 parts of diatomite, 5-8 parts of alkalized acacia mearnsii bark fibers, 4-7 parts of carbonyl iron powder, 2-5 parts of bamboo fibers, 5-10 parts of nitrile rubber, 0.2-0.5 part of a coupling agent of organic titanate, 1-2 parts of benzotriazole, 2-4 parts of chlorinated paraffin, 1-2 parts of antimony butter, 2-4 parts of closed cell perlite, 0.5-1 part of calcium stearate and 0.5-1 part of titanium-type nano-titanium dioxide. The PVC decorative material is environment-friendly, does not hurt environment and human bodies, has good comprehensive performance, flame retardance, abrasion resistance and good impact resistance, does not have the problems of shrinkage, deformation and the like in use, and can be widely applied when serving as decorative materials.