The invention relates to a production technology of ethyl difluoroacetate, specifically to a synthesis technology of ethyl difluoroacetate. The technology comprises the following steps: (1) 2,2,2-trifluoroethyl alcohol and chloroethane are subjected to an etherification reaction under the action of a catalyst so as to obtain trifluoro ethyl ether; (2) trifluoro ethyl ether obtained in the step (1) undergoes a defluorination reaction under the alkaline condition to generate difluoro ethyl vinyl ether; (3) difluoro ethyl vinyl ether obtained in the step (2) and ethanol are subjected to an addition reaction in the presence of a catalyst p-toluenesulfonic acid so as to obtain acetal; and (4) acetal obtained in the step (3) is oxidized under the combined action of hydrogen peroxide and vanadic anhydride so as to obtain ethyl difluoroacetate. The invention has the following beneficial effects: the synthesis method is simple, has characteristics of less pollution, high product purity and low production cost, etc., and provides a new approach to large-scale production of ethyl difluoroacetate.