Taking the unsaturated loess at Yangling in Shaanxi Province as the research object

the compressive tests on different stress paths are made with the intact loess and the corresponding remoulded loess under different water contents. The comprehensive structure potential parameters of unsaturated loess are calculated under different stress conditions. Based on the above

the variation characteristics of structural loess are studied under equal stress ratio condition. The result indicates: when the water content is invariable

the stress ratio(?=?3/?1)influences the structural characteristics of intact loess obviously; the performance is smaller for the stress ratio; the structural characteristics of intact loess is weaker; when the stress ratio is invariable

the water content of intact loess influences the structural parameter obviously. The lower water content

the bigger structural parameter. Especially in the region of low water content

the structural characteristics of unsaturated loess are influenced by the variation of water content strongly.