Abstract: Various choices of fill material within the ecological complexes of the wall structure became a problem that needs solution． It was presented that the preparing process，uniaxial compression constitutive model merits and demerits of several new types of building malerials，which are more widely used at home and abroad． Comparing analysis of the stress-strain relation of several ecological blocks was done． Finally the twin shear unified strength theory was used to derive multi-axial elastic-plastic constitutive relation，and a numerical simulation of comparative analysis was also done for composite wall filled with different materials by ABAQUS to draw their scope of ecological composite wall structure system． Studies have shown that:ceramic blocks can be used in middle-high rise buildings; aerated blocks and foam blocks can be used in multi-storey buildings; grass tiles can be used in low-rise buildings; while the plaster，due to its poor ductility and durability，is not recommended for the structural system．