Abstract: The surfactancy of lignosulfonate derivatives about proplene oxide adduct and ethoxylation has been studied.After reaction with PO,the ability for reducing the surface tension of water solution was improved.With controlling the amount and chain length of PO or EO,we can make the target products with better lipophilicity and wider adjustable quality.The results suggest that the derivative with LS PO structure has better wettability.The LS PO EO structural products have better emulsification and dispersive property in water medium.The derivative with LS PO EO PO structure has better dispersive property in oil phase.