<,正,>, In this paper, the effect of irradiation temperature on sol fraction-dose relationship of tluoropolymers was studied. It was found that the increasing of irradiation temperature can result in the decreasing of βvalue of fluoropolymer, which increases the crosslinking probability of fluoropolymer. The relationship between crosslinking parameter βand irradiation temperature （T,i,）of fluoropolymer is established as follows:β=2.2×10,-3, T,g,+4×10,-4,（T,g,-T,i,）+0.206.values of some tluoropolymers calculated from the above expression are in agreement with the experimental values.