Objective: To investigate optimum extraction technology conditions of polysaccharides from Yupingfeng by ultrasonic-assisted extraction

and to compare extraction rate of polysaccharides between compound extraction and unilateral extraction. Method: Optimum extraction conditions were obtained by orthogonal design test

compared with traditional extraction technology

and compared extraction rate of polysaccharides from Yupingfeng by compound extraction and unilateral extraction. Result: Result showed that optimum technology conditions were:ultrasound temperature 55 ℃

ratio of solid-liquid 1∶20

ultrasonic time 20 min

under these optimum conditions

extraction rate of polysaccharides from Yupingfeng was 14.25%

extraction rate of impregnation method was 5.44% in 180 min

extraction rate of conventional mixing method was 7.35%. Conclusion: Compared with traditional extraction methods(impregnation method and mixing method)

ultrasonic extraction had some advantages

such as time-saving

energy saving

high efficiency and so on. It offered sufficient conditions for large-scale and efficient production of modern medicine enterprises.