The change of kinetic coefficients in Bi0.88Sb0.12 alloy under influence of anisotropic deformation at temperature 80 K was studied. The diagrams of the magneto resistance rotation were considered. The anisotropic deformation was applied along the trigonal axis C3 of the crystal. The obtained results were interpreted in framework of the Lax ellipsoidal-non parabolic (ENP) model. The modifications of the energy band gap width (Eg) and charge carriers effective masses were examined. It was shown that the changes of properties of electrons and holes under pressure may differ. The possible causes of this difference were discussed.