Objective:To clear total polysaccharide content of Eucommia ulmoides Oliver

so as to provide evidence for the future explotion and development of Eucommia ulmoides.Method:The experiment for extracting EUP with multiple factors and multiple levels was designed by the uniform design according to U6（64）and its usage table.The mathematic model for the extraction of EUP was acquired to show the correlation between the EUP and three factors

and the optimal technological conditions were obtained.Result:The optimumextraction technology is:the ratio of solid to liquid being1∶5

extracting temperature being 100 ℃

and extracting time being 7h.Under the optimal condition

the yield rate of the polysaccharide is predicted to be 8.231%.Conclusion:By using U6（64）

the optimal yield rate of EUP can be calculated by the mathematic model within experiment range

and then the factors affecting the extraction of EUP can also be investigated.