The invention provides a method for preparing difluorochloroacetate and difluorochloroacetic acid through a two-stage tandem continuous non-catalytic reaction, wherein a two-stage spraying tower tandem process is used during single-pass operation, and after the single-pass operation is completed, a first-stage absorption tower and a second-stage absorption tower are switched so as to continuouslycarry out a reaction. According to the present invention, the method has advantages of low alcohol or water content in the reaction product, easy separation and purification of the product, continuousreaction, high reaction efficiency, high yield, no requirement of catalysts and acid binding agents, less three-waste, and the like.