Combined with physical and mechanical properties of weak intercalation.The proportioning test is conducted according to the principle of similarity.This study aimed to develop an appropriate similar material for weak intercalation which can be used in physical model test in laboratory.The single factor test and orthogonal test is combined to research.Three controlling factors including A(paraffin-aggregate and bentonite)，B(gypsum-aggregate and bentonite)，C(aggregate-bentonite ratio)are chosen to perform the orthogonal tests.A series of tests is carried out to determine the density，compression strength and elasticity modulus of different similar materials.The physical and mechanical properties of similar material which use quartz and barite powder as the aggregate is studied.The sensibilities of three factors level change are analyzed by orthogonal test.The results show that the density，compressive and elasticity vary with the factor level.