The introduction of phosphorus to improve the flame retardance of epoxy resin systems has been the focus of attention by researchers in recent years.In this paper
the mechanism of the phosphorus-containing flame retardant was simply discussed.The types of flame-retardant epoxy resins containing phosphorus and flame-retardant properties of its cured compounds were demonstrated elaborately.The synergistic effect of phosphorus-nitrogen and phosphorus-silicon on fire resistance was also presented.