Abstract:The surface conditions for the Loess Plateau in the south of Ordos Basin are very complicated with many valleys,complex landforms and serve elevation change,the lithology of the outcrop changes greatly,the ignition and receiving conditions in this area can be greatly improved if the crooked wide line acquisition is applied,however there are many types of interference noises and sever static correction problem exists for the preliminary seismic data,as a result the stack sections from the routine processing methods can not meet the need of the geological interpretation.Regarding the fact in which the section location of the crooked wide line deviates the locations of the field subsurface reflection points,a reasonable geometry for the crooked wide line was applied,so the strikes of the CMPs and the lines could almost match with each other and the best stacking results can be achieved.For the complex types of the interference noises,several de-noising methods were jointly used,for the complicated static correction,the lengthy wavelength static correction problem was solved by applying several methods controlled by micro-well logging,the low signal to noise ratio problem was resolved by iteration method of velocity analysis and residual static correction.The processing results show that by application of the methods above,the signal tot noise ratio and the resolution of the seismic data in this area were greatly raised.