Abstract: Provided is a continuous synthesis method for ethoxymethylenemalononitrile. The method includes the following steps: malononitrile, triethyl orthoformate and acetic anhydride are continuously fed into a continuous reaction device to perform a condensation reaction, to obtain the ethoxymethylenemalononitrile, and in the process of the condensation reaction, the generated ethoxymethylenemalononitrile is continuously discharged; herein, the molar ratio of the malononitrile, the triethyl orthoformate and the acetic anhydride is 1:(0.9-6.0):(2.0-6.0). By adopting the continuous reaction device in the present disclosure, since the amount of materials involved in the reaction per unit time is greatly reduced, a high temperature dangerous area is reduced, and a safety risk is greatly reduced.