Sucrose stearate- maleate (Sucrose stearate- maleate, MSS) containing anion groups were designed and prepared by sucrose stearate (SSE) with maleic anhydride, to overcome the shortcomings of sucrose esters such as low solubility and, which inhibits its emulsifying properties, particularly in the acidic region and in the presence of salt. The structure of the products were correct by 1H NMR and ESI-MS. The results indicated that anionic modified MSS exhibited remarkably higher solubility and emulsifying properties than SE, especially in the acidic region and in the presence of NaCl, and MSS had excellent stability in hard water (5 level).