A series of novel cyclo-phosphazenes derivatives including hexaphenoxycyclotripho sphazene (HPCTP), Hexallyloxycyclo-phosphazene(HACP), 2-allylphenoxy-pentaphenoxycyclot riphosphazene (APPCP), hexa-(4-glycidoxyphenoxy)cyclotriphosphazene (HCPEP), tris(4-glycid oxy-phenoxy) triphe-noxy cyclotriphosphazene (TCPEP) and tetrakis(4-glycidoxyphenoxy)diph enoxy cyclotriphosphazene (TCPPEP) were synthesized by using the hexachlorocyclotriphosph azene (HCCP) as raw materials.The products were characterized by FT-IR, MS, 1H-NMR a nd elemental analysis technique.They have been applied in epoxy resin, benzoxazine resin,unsaturated polyester resin and acrylate resin, and the thermal, mechanical, flame retardant a nd electrical properties were all investigated.