Under the conditions of isotropic consolidation and K0 consolidation,a series of drained triaxial compression tests on rootless soil and root-soil composite are performed respectively,by GDS Stress Path Triaxial Testing System. These experiments are including conventional triaxial compression and reduced triaxial compression. The effects of stress paths on the shear strength characteristics of rootless soil and root-soil composite are studied comparatively,by different consolidation methods and different triaxial compression test methods. Through this experimental study some useful conclusions...