Objective:To explore the optimal purification process of the polysaccharides from sugarcane biogases.Method:To explore the optimum technology

we compared Savage method with TCA method for depro-teinization and hydrogen peroxide solution method with active carbon method for decoloration.And four common macroporous absorption resins were compared for differences in adsorption and desorption performance.Then phe-nol-sulfuric acid method was used to determine the content of the polysaccharides from sugarcane biogases.Result:The optimum purification technological conditions were determined as following:deproteinization with savage meth-od;discoloration with active carbon method;purification with macroporous absorption resins of MG-1（the upper sample weight is 0.3 g;the column high is 35 cm and the flow rate is 10 mL /15 min）.The polysaccharides of sug-arcane biogases improved from 51.11% to 83.57%.Conclusion:This experiment provided a reference for the pur-ification of polysaccharides from sugarcane biogases and provided an evidence for the further development of sugar-cane biogases.