The synthetical conditions of 1,1’-dimethyl ferrocenedicarboxylate were investigated by using 1,1’-ferrocenedicarboxylic acid and methanol as raw material. The effect of catalyst on yileds were discussed. 1,1’-dimethyl ferrocenedicarboxylate was synthesized by new synthesis technology of one-pot method. The effects of the component ratio,reaction temperature,time on the product yield were discussed and the optimum technological conditions were obtained. The optimum conditions are determined as follows:the ratio of n(dicarboxylic acid)∶n(SOCl₂)=1∶2.5,reaction time 4.5h,reaction temperature 50℃. The product yield is 91.1%.