Abstract: The vertical and lateral variation of surface or near?surface structures is one of important factors of causing different wave lengths static correction problem. The surface of Lu?9 well area in Junggar basin is covered by desert and characterized by varied reliefs and typical aeolian sediments. Under the uncemented dune is the early exposed ancient lakebed where cemented or semi?cemented sandshale interbed is distributed and characterized by aqueous origin. In the past the traditional surface structure investigation method could not be used to get accurate depth and velocity parameters of the surface and/or near?surface structures, resulting in that the long wavelength static correction should be made for the seismic data available. This paper presents the method for such correction of seismic data from this well area. The analysis, comparison and result show that such a correction can not only be used to obtain the data as required, but also develop the model for near?surface depth vs. velocity, so as to continuously determine the vertical and lateral velocity variations of strata above the top of high velocity layers and provide basis for the near?surface structural researches