The invention relates to the technical field of polymer materials and particularly relates to a spiral ring polymer material and a preparation method thereof. The spiral ring polymer material is goodin dissolubility and can be completely dissolved in common organic solvents of dichloromethane, trichloromethane, tetrahydrofuran, dimethyl sulfoxide and the like. The preparation method comprises thefollowing steps: mixing a diisonitrile derivative biological monomer A and symmetrical acetylene diester derivative monomers B in a carbon dioxide atmosphere to react, so as to obtain an intermediateproduct; and adding the intermediate product into a precipitating agent to obtain precipitates, filtering, and collecting the precipitates, so as to obtain the spiral ring polymer material. Accordingto the preparation method, the reaction is carried out in the carbon dioxide atmosphere, carbon dioxide is taken as a monomer to participate in polymerization reaction, a catalyst is not required, water does not need to be removed in a polymerization system, and the polymerization is finished in one step through a one-pot method, so that the method is simple, and the yield is high.