The invention belongs to the field of chemical synthesis processes, particularly relates to a method for synthesizing a luliconazole intermediate-(S)-2,4-dichloro-1-(1,2-dichloroethyl) benzene, and solves the technical problems of high cost, lower yield and low possibility of industrialization in the conventional synthesis method. The invention adopts the following technical scheme: the method comprises the steps as follows: a, preparing a chiral catalyst; b, adding a surfactant or a phase transfer catalyst and omega-chloro-2,4-dichloroacetophenone as well as a hydrogen source into the chiral catalyst for reaction; c, extracting and re-crystallizing a reaction solution and drying a solid to obtain (R)-2-chloro-1-(2,4-dichlorophenyl) ethanol; and d, reacting (R)-2-chloro-1-(2,4-dichlorophenyl) ethanol with oxalyl chloride, and extracting, purifying and drying the reaction solution to obtain (S)-2,4-dichloro-1-(1,2-dichloroethyl) benzene as a product. The invention provides a novel method for preparing (S)-2,4-dichloro-1-(1,2-dichloroethyl) benzene with high yield and low cost.