Abstract:There are many regular noises in the DQ area,In some cases,seismic interpretation may be misguided by noise events.noises in the area are surface wave,first-break refraction,multiply-reflected refraction,secondary back refraction,secondary back reflection,"net noise”caused in CDP stack and so on.The analysis of thesw noises Leads to the following new knowledges: •The event (or time distance curve)of surface wave in seismic record is a curve,not a straight line.•There are multiple refractions in the record besides multiple reflections. •There are not only the seismic waves associated with seismic source butalso the secondary refractions and secondary reflections which are indep::.ndent of the seismic source. •Misusing refraction in both NMO correction and CDP stacking may cause some pseudo-linear strip noises in stacked seismic section. •Cross-interference between shallow multiply-reflected refraction and secondary back refraction causes "net noise" in stacked seismic section. The special methods for removing the above noises are briefly recommended finally.