Tai'an-Xinzhou refraction and wide-angle reflection profile goes throughout the structural units of Luxi uplift,North China depression and Taihang Mountain uplift.And the middle segment of the profile crosses Xingtai seismic area in Hebei Province.A series of waveform records in this profile are processed by using wavelet multi-scale analysis.The phase features of Xingtai seismic area and its adjacent area are obtained.The results show that the Moho below Xingtai seismic area is complex construction,which may be double-layer,but the Moho in the adjacent area presents clearer first-order discontinuity surface.The deep reflection profiles in the researched region also indicate that the Moho below Xingtai seismic area is crust——mantle transitional zone.And in mid-upper crust,there are detachment structure and the deep fault which extends to the Moho.So the complex structure and morpholoy of the Moho are the deep tectonic background of Xingtai seismic area.