The invention discloses a low-odor and flocking-effect-imitating plant straw powder filled modified polypropylene material and a preparation method thereof. The low-odor and flocking-effect-imitatingplant straw powder filled modified polypropylene material is prepared from the following components in percentage by weight: 40 to 99 parts of polypropylene resin, 0 to 40 parts of ore body powder, 0to 20 parts of a toughening agent, 0.5 to 10 parts of plant straw powder, 0.1 to 1 part of an antioxidant and 0.1 to 0.5 part of a light stabilizer. The low-odor and flocking-effect-imitating plant straw powder filled modified polypropylene material disclosed by the invention has the following positive effects that 1, chemical staple fibers are replaced with the plant straw powder; the plant strawpowder is added into the light-color modified polypropylene material, and a texture design is combined, so that the material has a flocking-effect-imitating effect; a hollow structure of the straw powder has an adsorption effect on odor so that the odor of the material is reduced and a slight wheat aroma also can be generated. The material disclosed by the invention can be used for replacing a textile fabric covered interior part product; the production cost of automobile part manufacturers is saved and high requirements of consumers on smell sense and vision of automobile interior parts aregreatly met; 2, the amount of the added plant straw powder is relatively small and the plant straw powder does not easily separate out, so that the plant straw powder has no influence on physical performance of the material.