This paper studies the recycling of the starch glycoside that was synthesized by the glycoside exchange with starch and alcohol. The chemical structures of the product which was separated from the upper liquid, were characterized with primarily FT-IR, GC-MS and the physicochemical properties were analysed. The upper starch glycoside was contrasted with the lower starch polyglycosides. The results demonstrated that the product of the upper liquid is starch glycoside, surface tension is from 24.77~29.50 mN/m and the CMC is 2.0 ×10-3 g/L.