The invention belongs to the technical field of composite materials, and discloses a beta-crystal polypropylene composite material containing biological calcium carbonate and a preparation method and an application thereof. The beta-crystal polypropylene composite material containing the biological calcium carbonate comprises the following components of 1 to 30wt% of monetaria annulus powder and 70 to 99wt% of polypropylene. The composite material is characterized in that the monetaria annulus powder is used a beta nucleating agent, and when the adding amount reaches 5%, the content of the polypropylene beta-crystal form in the composite material is induced to 80.1%. Meanwhile, the monetaria annulus powder can be used an inorganic filling material and be added into the polypropylene, so the rigid balancing effect is realized. The composite material and the preparation method have the advantages that the preparation method is simple, the operation is convenient, the obtained beta-crystal polypropylene composite material containing the biological calcium carbonate has special performance of the high-content beta-crystal polypropylene, and the composite material can be applied to industries and fields, such as traffic, buildings, dining articles and household electric appliances.