The invention discloses a high-fluidity nanofiller modified polyvinyl chloride. The high-fluidity nanofiller modified polyvinyl chloride is prepared from the following raw materials in parts by weight: 80-100 parts of polyvinyl chloride, 10-20 parts of ethylene-propylene-diene monomer, 5-15 parts of polyborate fiber, 4-12 parts of straw fiber, 1-5 parts of illite powder, 2-6 parts of silica sand,1-4 parts of hollow glass bead, 0.2-0.8 part of aluminum-zirconium coupling agent, 1-2 parts of dicumyl peroxide, 0.1-0.6 part of vulcanization accelerator M, 0.1-0.4 part of magnesium oxide, 1-2 parts of methylsilicone oil, 1-2 parts of dibutyltin dilaurate, 2-8 parts of epoxidized soybean oil and 1-2 parts of anti-aging agent. According to the high-fluidity nanofiller modified polyvinyl chloridewhich is provided by the invention, the obtained polyvinyl chloride plastic has a high blending dispersion degree, interface binding strength among materials is large, liquidity is good, density is good, and thermostability is good.