The present invention provides a production method to effectively obtain a product in a yield equal to or higher than an objective level, by accurately analyzing the amount of a fluorinated ester compound at the time of its production, or by accurately analyzing the consumption amount or the produced amount of the product or the fluorinated ester compound at the time of chemical conversion of the fluorinated ester compound. Namely, it is the method for producing a fluorinated ester compound by a chemical reaction of a raw material compound, wherein the chemical reaction is carried out until the yield of the fluorinated ester compound as obtained by gas chromatography by using a non-polar column reaches a predetermined yield.
