The invention discloses a multifunctional powder component and a polymer structure thereof. The invention solves the problem that the prior concrete structure has a large number of hole clearances and is easy to form wall caner. The powder component comprises powder containing phenolic resin and paddy powder; the powder containing phenolic resin can be made from a waste circuit board with the parts on the surface removed and the heavy metal substances isolated after the waste circuit board is cut and crushed; then, the powder containing phenolic resin is evenly mixed with the paddy powder according to a predetermined mixture ratio so as to form the multifunctional powder. Because the powder containing phenolic resin is extra fine and non-hydrophilic, the multifunctional powder component has the advantages of mildew resistance and acid and alkaline resistance, tightness and high intensity, moisture retention and slushing, catalyzing expansion and environmental protection, etc.; the paddy powder ensures that the multifunctional powder component has the advantages of heat insulation, heat preservation and bridging action, etc.; therefore, the invention can be widely used in an architectural engineering structure.