In this article, a series of modified gemini surfactants has been synthesized by the reaction of polyoxyethylenated stearyl ether and maleic anhydride. The two hydrophilic ethylene oxide chains were appended to maleic anhydride through condensation with polyoxyethylenated stearyl ether. The structure of the final products was confirmed by FTIR. From measuring surface activities, these gemini surfactants were exhibited lower surface tension, low foaming, good wetting, emulsion and dispersibility.