Abstract: Heat analysis of PTFE resin and glass reinforced PTFE was completed and the basic manufacturing process parameters were assured. In terms of the requirements of characteristics of highspeed broadband missile radome outlayer, the tensile strength and dielectric properties were investigated. The results showed that about 11% (weight fabrication) chopped fiber or 37% glass cloth reinforcing PTFE had the highest tensile strength and acceptable dielectric properties. Crystallizing phenomenon of PTFE was discovered easily with the adding of some particles. Finally, prediction of dielectric properties was discussed.