Abstract: There are many mud volcanos in southern margin of Junggar basin.This paper analyzed spiller sample from Dushanzi mud volcano, and found its sporopollen assemblage is dominated by angiospern aporopollen with rich gymnospermae sporopollen.The geologic time of sporopollen belongs to mid-late period of Oligocene.

Key words: Dushanzi oilfield, Mud volcano, Sporopollen assemblage, Oligene