Abstract: This paper studied the poplar veneer, and impregnated them with self-made fire retardant and FRW fire retardant, to discuss the influence of different fire retardant, impregnation time, impregnation concentration, hot-pressing temperature on the fire retardant retention quantity, the bonding strength and the fire-retardant properties. The results showed that fire retardant retention quantity, oxygen index and bonding strength were 1.4322%- 13.4726% , 36.6%- 89.9% and 0.131- 0.798 MPa with self- made fire retardant treatment while the fire retardant retention quantity, oxygen index and bonding strength were 1.5449%- 14.7724%, 45.3%-70.5% and 0.233-0.698 MPa with FRW fire retardant treatment. Through the self-made and FRW fire retardant treatments, the fire retardant properties of poplar plywood were significantly improved, the oxygen index had reached and was much higher than the flame retardant grade request in JISD1322-77, but its bonding strength significantly decreased.