At present,polymeric solidified materials combined the traditional ones will have wide prospect applied in the loess improvement areas.In this paper,the unconfined compression strength for new eco-material of SH combined lime to improve loess was designed using the orthogonal experiment method.Test results show that the optimal combination is 10%SH and 4%lime,and the air dried time is 28 days.The result possesses certain reference value for further engineering properties research on improved loess.