A method for producing a fluorine-containing alkyl ether is disclosed wherein a sufficient reaction rate can be attained even under mild conditions. This method enables to efficiently perform post-processes such as distillation following the reaction. After introducing a polar non-protic solvent, a fluorine-containing ether, a catalyst, a fluorine-containing alkyl alcohol and a fluorinated olefin into a reaction vessel, the fluorine-containing alkyl alcohol and the fluorinated olefin are reacted with each other so as to produce a fluorine-containing alkyl ether. In this method for producing a fluorine-containing alkyl ether, the mass ratio between the polar non-protic solvent and the fluorine-containing ether introduced in the reaction vessel (polar non-protic solvent/fluorine-containing ether) is from 5/95 to 80/20.