A series of four sodium ${alpha}-sulfo$ fatty vinyl ester oligomers including sodium ${alpha}-sulfo$ lauric acid vinyl ester oligomer, sodium ${alpha}-sulfo$ myristic acid vinyl ester oligomer, sodium ${alpha}-sulfo$ palmitic acid vinyl ester oligomer and sodium ${alpha}-sulfo$ stearic acid vinyl ester oligomer were examined for surface activities such as surface tension, foaming power, foam stability, emulsifying power, dispersion effect, solubilization of orange OT. The critical micelle concentration(CMC) was also evaluated. Consequently, these sodium ${alpha}-sulfo$ fatty acid vinyl ester oligomers were shown to have a good cohesive power and dispersion effect.