Disclosed is a method for producing a fluorine-containing copolymer composition wherein a fluorine-containing copolymer is produced by polymerizing 1-99 weight % of a monomer mixture (A) containing a polymerizable monomer having a fluoroalkyl group and a polymerizable monomer having a hydrophilic group in the presence of 1-99 weight % of a surfactant (B) containing a surfactant having an oxyalkylene group. The total amount of the monomer mixture (A) and the surfactant (B) is not less than 80 weight % of the polymerization system.