Abstract: PAN-LDH polymer was made through blending by thiocyanate intercalated layered double hydroxide(SCN~--LDH) and polyacrylonitrile-sodium thiocyanate(PAN-NaSCN) aqueous solution.The flow property,flame retardance and structural features of the PAN-LDH were studied by utilizing various methods.The results showed that the flame retardant property of the sample was improved with LOI increasing from 18% to 21%;the flow property of the solution system before and after blending exhibited little change;FT-IR and X-ray diffraction revealed that the crystalline order declined and PAN had been intercalated into the layer of the LDH,which should be the primary contribution to the improvement of the flame retardant property.