The method of heat leaching was used to extract inulin from jerusalem artichoke to improve the utilization rate,in which respones surface analysis was used to optimize extraction conditions. Based on the single factor experiments,the Central Composite design principles and Design-Expert.8.05 data ananlysis software were used to select three parameters of response surface design to optimize extraction process. The result showed the optimize extraction conditions:extraction time 50 min,extraction temperature 84℃,liquid to solid ratio 35,the extraction value was 89.26%.%为了提高菊芋菊糖的提取率，本文采用热浸提法对菊芋进行处理，并通过响应面法优化提取条件。在单因素实验的基础上，依据Central Composite中心组合设计原理，采用Design-Expert.8.05数据分析软件，对菊糖提取进行了三因素三水平的优化分析。确立最佳提取条件：浸提时间50min，浸提温度84益，液料比35，在此条件下蛋白质的提取理论值达到89.26%。
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