Abstract:High-resolution seismic exploration was done to ascertain distribu-tian of hydrccarban resources in Beisantai area,The data acquisitionparameters used are as follows:25m group interval,34m geaphane array length,lkg dynamite,2ms sampling interval,60-fold multipli-city,12-90Hz scanning frequency(vibratar).Furthermore,amplitude compensation,decanvalutian,velocity analysis and residual static car--rectian were performed twice in the data processing.Consequently,the dominant frequency of reflection from reflector at depth of 3000m is up to 40 Hz or so,and the sandstone bed whose thickness is 15~20m is distinguishable.What is mare,same geological features such as chan-nel sand body,buried hill,minor fault,small dame,overlap and pinch-out look quite clear on seismic sections.Obvious economic effect has been received Through the drillings based on the structural map that was plotted using high-resolution seismic sections.