Abstract：Soil structure is the most important factor influencing mechanical characteristics of soil，but the quantitative study of soil structure is a considerably difficult problem. A practical expression of structural parameter，named stress comprehensive soil structure potential(stress-CSP)，is proposed by some scholars， which，however，has its own limitations. In this paper，the shortcomings existing in stress comprehensive structure potential (stress-CSP) are overcome. Based on the reasonable side of stress-CSP，a new structural parameter of soils，referred to strain comprehensive structure potential (strain-CSP)，is proposed，which can be used for complex stress conditions. The limitation of structural parameter applied under complex stress condition is overcome，and its application space is thus extended.
