Abstract: Based on the combination of surface geological data and geophysical data, the basic framework of Qiangtang basin can be sub-divided into four primary units, seven secondary units and a few third units. It is pointed out that the eastern North Qiangtang depressionand the eastern South Qiangtang depression are favorable source areas; Sebei low swell and Long 'enigu reservoir could be major prospect-ing areas, and Dazuoma faulted-anticline is the most significant structure for petroleum exploration.

Key words: Qiangtang basin, structural character, structural interpretation, structural unit, petroliferous potential