A series of sodium lauryl polyoxypropylene ether sulfates (SLPpS, p = 3, 6 and 9) were synthesized from natural lauryl alcohol by propoxylation and sulfuric acid esterification followed by neutraliza-tion. The structures of the products were confirmed by FTIR and 1HNMR. Their interfacial and micellar solution properties, such as surface tension, foamability, emulsifying power, wettability, detergency and calcium tolerance were investigated. Compared with two traditional surfactants, sodium dodecyl sulfate (SDS) and sodium lauryl ether sulfate (SLE3S), the effect of polyoxypropylene (PPO) chain on the properties of extended surfactant was discussed. It was found that the PPO chains not only provided lipophilic contribution to the SLPpS molecules, which resulted in the surface tension of SLPpS being as low as 32.1 mN/m and their critical micelle concentrations reaching the order of magnitude of 10-4 mol/L. These SLPpS surfactants exhibited better emulsifying power, wettability and detergency than SDS and SLE3S. The PPO chains but also provided a weak polar contribution to the surfactants, the critical micelle temperature was lower than 0℃ and calcium tolerance was 30 times stronger than that of SDS. Therefore, SLPpS can be used in personal care and household cleaning products.