The invention discloses a fruit fresh-keeping packaging material with high air permeability and a preparation method thereof, and belongs to the field of packaging materials. A raw material comprises modified kieselguhr and polyethylene or polypropylene resin, wherein the modified kieselguhr is kieselguhr of which the surface is coated with a layer of polyvinyl acetate, polyacrylic resin or copolymers of the polyvinyl acetate and the polyacrylic resin. The preparation method comprises the following steps of: modifying the kieselguhr by using the polyvinyl acetate or/and the polyacrylic resin; and melting and blending the modified kieselguhr with the polyethylene or the polypropylene resin to prepare a membrane. The packaging material of the invention has high mechanical properties and air permeability, has the oxygen penetration rate of between 2,000 and 10,000 ml/m<2>.day, and has excellent fresh-keeping effect on fruits such as Chinese pears and the like.