The invention provides a method for synthesizing an aromatic dichloromethyl ester. The method comprises the following steps: based on readily available aromatic carboxylic acid, taking alkali as an additive, and efficiently synthesizing the aromatic dichloromethyl ester compound with dichloromethane under air conditions. Compared with the conventional ester compound synthesizing method, the methoddisclosed by the invention has obvious advantages that the reactive raw materials (such as the aromatic carboxylic acid and dichloromethane) are cheap and readily available, the reaction conditions are simple, excellent tolerance on multiple functional groups on aromatic rings is achieved, the yield is high and the like. The method disclosed by the invention can be widely applied to synthesis ofthe fields of medicines, materials, natural products and the like in industrial circles and academic circles.