Abstract: With the development of national economy,many important engineering,such as airport,high building,require us a good understanding to the underground geological tectonics in city planning to reduce the damage of earthquake.Seismic prospecting plays an important role in this field.How to increase the precision for seismic prospecting is a problem need to resolve.It is not only relevant to the method we used to process data,but also relevant to the selection of seismic parameters in field collection of seismic data.