The dramatic changes of near-surface velocity and vertical as well as lateral thicknesses that result from complicated lithologies and structures in the mountain areas and mountain front of the southern margin of Junggar basin bring great difficulties to the static correction in this area.For the purpose of solving the problem of seismic data imaging in mountain areas,high-frequency time difference between seismic traces must be eliminated to avoid out-of-phase stacking,and medium-long wave length components in static correction must be controlled to ensure the accuracy of the structure location and structural height.The application conditions and adaptability of existing static correction methods were analyzed and studied to improve imaging quality in the mountain areas of the southern margin.A new set of ideas for decomposition and reconstruction of long and short wavelength components were presented according to static correction values,the advantages of different static correction methods could be taken and good effect was obtained in the mountain areas on the southern margin of the Junggar basin.