Some Lauan（ Shorea spp.）and Manchurian Ash（ Fraxinus mandshuria ） plywood were treated with fire retardant CU 60 and their properties were also tested. Results showed that the fire retardant property of the treated plywood could reach fire retardant grade B 1;the adherence of paint film grade could reach level 2; the bond strength decreased less than 10% according to the demands of related standards.