Oil ethoxylate sulfonate OXOS-128 is a new type of green anionic surfactant prepared by alkoxylation and sulfonation of natural oil. The product has the characteristics of high biodegradation rate, low pour point, low foam, quick defoaming, easy rinsing, good water solubility and hard water resistance. The aqueous solution shows no gel phase formation and has excellent compatibility with various anionic and nonionic surfactants as well as washing auxiliaries. It is mild, non-irritating and non-toxic, and can obviously improve the gentleness of the formula. By adjusting the formula, it can partially or completely replace the anionic surfactant AES and LAS.