Based on P and S wave travel times of local, regional and far earthquakes recorded on 115 station distributed in capital area and Handan network in Hebei Province, P and S wave velocity structures beneath Taihangshan tectonic belt and areas at its east were obtained in the depth of 300km by seismic tomography technology. The results show that, there exists obviously transversal unhomogeneous in upper mantle velocity profiles along Taihangshan tectonic belt, where its southern, middle and northern segments exhibits their different structure features.