Abstract: Through direct shear test and the triaxial compression test，the influence of fiber length，fineness， toughness，and mixing ratio on the stress strain curve and shear strength of textile soil ( TEXSOL) was discussed． The research showed that the influence of fiber incorporation on soil internal friction angle was small，and it mainly improved the soil cohesion; the stress-strain relationship of TEXSOL showed strain hardening characteristic，there was no typical adhesive failure and tensile failure; the influence of fiber length，toughness，and mixing ratio on the stressstrain curve and shear strength of TEXSOL was remarkable，and that of fiber fineness relatively small．