The foaming properties of Di-n-alkyl disulfate surfactants in aqueous solution were measured by the Foamscan, and the effect of different additives such as sodium chloride and polymers were investigated. Results show that these surfactants have excellent foam properties. Foam stability decreased significantly with the increase of spacer length. With temperature rising, half foam life period decreased remarkably. The electrolyte deduced the foaming volume, while the foam stability increased firstly with the increase of sodium chloride concentration to a certain extent and then dropped. The polymer can enhance foam stability.