The invention belongs to the field of materials, and in particular to a modified phenolic resin material which is prepared from a hot-melting phenolic resin mixture by foaming and curing; the phenolic resin mixture comprises hot-melting phenolic resin, insulator silicon rubber micro powder, a foaming agent, a curing agent, modified montmorillonoid, hexamethylenetetramine, and a coupling agent. By adopting the modified phenolic resin material provided by the invention, the technical defects that conventional phenolic resin has a relatively large number of free formaldehyde can be effectively solved, meanwhile the modified phenolic resin has good sound insulation properties, and in addition, a preparation method has the advantages of being simple in process and low in cost.