Abstract:The beginning of offshore seismic work in occidental countries was during 1930s. It had gone through all stages of technical developments of land seismic methods; but it had developed 0at a higher speed owing to much better operating conditions for acquisition of high quality data at a much higher efficiency and hence at a lower cost. In fact, offshore techniques have become leading in many aspects, such as 3D survey and high resolution prospecting, both being used more wide spreadly offshore. Offshore seismic exploration in China got started during 1960s. We have almost run a course of forty years' development accomplished by occidentals within only twenty years, Up to 2982 our offsllora digital milage counted up to 330,000 km, This is too low a figure to the necessity of covering the entire offshore area of China.W e have therefore to adopt advanced techniques and to speed up our offshore seismic works for the finding of new fields at an earlier date.