In this study, 3D models of crustal inhomogeneities down to ~ 60-150 km were constructed under the collision zones of the Caucasus, Eastern Anatolia, NW Himalayas and Tien Shan using the method of local seismic tomography. The different characteristic feature of crustal structure was found. Comparison of seismic tomography models of different collision zones can be the key to better understanding the processes in the crust and lithosphere.