The invention discloses a polypropylene material filled with inorganic mineral powder, and its preparation method and application. The polypropylene material comprises, by weight, 43 to 90% of polypropylene, 0 to 1% of a heat stabilizer, 0 to 1% of a lubricant, 0 to 15% of a flexibilizer and 10 to 40% of an inorganic mineral powder filler, wherein the inorganic mineral powder filler is one selected from the group consisting of calcium carbonate, powdered steatile, kaolin, mica, wollastonite, glass microballoons, ceramic microspheres and barium sulfate or a mixture of the above-mentioned materials. When used as a material for hinges, the polypropylene material filled with inorganic mineral powder in the invention has excellent folding resistance which is similar to that of a pure polypropylene material, good fatigue durability and comprehensive mechanical properties, outstanding cold resistance and high thermal deformation temperature, wherein tensile strength is no less than 30 MPa, flexural modulus is no less than 2000 MPa, the thermal deformation temperature is no less than 110 DEG C; the material can be used for a long time at a temperature of from -35 to 85 DEG C and can be used to prepare hinge materials which have requirements for high heat resistance and cold resistance.