Abstract: A fluorine-containing copolymer composition comprising a fluorine-containing elastomer and a fluororesin, both having reaction sites capable of reacting with a common crosslinking agent gives crosslinking molding products having distinguished roll processability, moldability and mechanical strength, where crosslinking molding is carried out preferably by a peroxide crosslinking system or polyol crosslinking system, and the low temperature characteristics is considerably improved when the fluororesin has a softening point of not less than 120.degree. C.