The target product cationic ester-containing gemini surfactants called 1,3-Bis(3-methylimidazolium)-2,2-bis(dodecanoatemethyl)-propane（EminC12） was synthesized with lauric acid, 2,2-bis(bromomethyl)-1,3-propanediol and N-methylimidazole.The main reaction includes esterification and quaternization.The reaction process was studied as follows: n (lauric acid) ／n(2,2-bis(bromomethyl)-1,3-propanediol)=2.2:1,reacted at 115 ℃ for 7 h , with p-toluenesulfonic acid as catalyst and methylbenzene as the water absorbent,the yield rate of 1,3-dibromine-2,2-bis(dodecanoatemethyl)-propane（DEC12） was 87 %.The quaternization conditions: the yield rate of target product which was identified by IR、elementary analysis and 1H NMR could reach to 80 % when the intermediate and N-methylimidazole reacted at 150 ℃ for 5 h.The critical micelle concentration of CMC is 0.3 mmol／L and γcmc is 39 mN／m at 25 ℃.This new surfactant shows higher foaming and stability.