Abstract: To explore the extraction technology of polysaccharides from Kaite mango processing wastes，the optimal extraction parameters were investigated by using orthogonal array design. The contents of polysaccharide were determinated by anthranone-sulfuric acid. The results showed that the optimum conditions for extracting polysaccharides in peel were as follows：extraction temperature of 70℃，extraction time for 2 hours， liquid-to-solid ratio of 1∶25，and re-extracted 3 times. The polysaccharide yield could reach 6.62 （±0.51）% in peel.For the fruit embryo，the optimum extraction technology was as follows：extraction temperature of 90℃，extraction time for 3 hours，liquid-to-solid ratio of 1∶20 and re-extracted 3 times. The polysaccharide yield was 3.48（±0.40）%. The polysaccharide content in peel was higher than that in embryo. These results suggested that extracts of mango processing wastes had potential value of utilization in polysaccharide industries.