The invention discloses a method for enriching phenolic environmental estrogens, and belongs to the technical field of composite materials. A magnetic graphene polyaniline nanocomposite is prepared bydissolving a graphene/polyaniline composite material, FeCl3 and sodium acetate in an alcohol having 1 to 5 carbon atoms as a solvent for reaction in a high pressure reactor and then ultrasonically treating. The composite prepared by the method overcomes the defects that graphene sheets are easy to stack and simple polyaniline is easy to agglomerate. The adsorbent shows adsorption performances superior to that of a magnetic graphene material and a magnetic polyaniline material when used in adsorption of the phenolic estrogens. Graphene modified by the magnetic material and polyaniline not onlyimproves the adsorption efficiency of the phenolic estrogens, and due to the magnetic properties of the material itself, the magnetic graphene polyaniline nanocomposite is easy to separate. Therefore, the method has the advantages of high adsorption efficiency and simple operation.