Disclosed is a method for producing a halogenated unsaturated carbonyl compound commercially advantageously without causing environmental problems. A method for producing a halogenated unsaturated carbonyl compound represented by the general formula (III) below is characterized in that an alkoxy cyclic ether represented by the general formula (I) below is reacted with an acid halide represented by the general formula (II) below. (In the above formulae, symbols are as defined in the description.)