To provide a method for producing a melt-moldable fluororesin, which is capable of increasing the molecular weight of the fluororesin and preventing discoloration of the fluororesin, by using a specific fluorine-containing emulsifier other than ammonium perfluorooctanoate.

The method for producing a melt-moldable fluororesin is provided, in which the melt-moldable fluororesin is produced by performing emulsion polymerization of a fluorine-containing monomer or a fluorine-containing monomer and an olefin in an aqueous medium containing a fluorine-containing emulsifier represented by formula (1) CF₃CF₂OCF₂CF₂OCF₂COONH₄. The melt-moldable fluororesin is a tetrafluoroethylene/hexafluoropropylene copolymer with a molar ratio [tetrafluoroethylene/hexafluoropropylene] of 95/5 to 90/10, tetrafluoroethylene/perfluoro(propyl vinyl ether) copolymer with a molar ratio [tetrafluoroethylene/perfluoro(propyl vinyl ether)] of 99.7/0.3 to 97/3, etc.