S-waves velocity distribution in the earth’s crust and the first two hundred kilometers of the upper mantle is inferred from the data of a seismological profile of 18 broad-band stations installed in the frame of an international experiment which took place in 2003 in the south of Siberia and in Mongolia. To construct the model we used the inversion of P-to-S receiver functions under each station. The linear spline interpolation of the individual velocity models enabled to make a vertical section of S-waves velocities up to 65, 120 and 270 km over a distance of 1000 km covered by the whole profile. The section is represented as well as anomalies regarding the chosen standard velocity section. The most intense low-velocity anomalies are distinguished in the crust and upper mantle beneath the Sayan, the Khamardaban ridge and the Khangai plateau.