Eastern basements of Junggar Basin mainly are andesite and the basalt of the Middle Carboniferous. In recent years, many volcanic rock oil and gas fields have been discovered in this area which become the important oilproducing area. The craters’ accurate positions were determined in preliminary survey of field geology in Eastern Junggar Basin in 2008, authors elaborated these craters’ types and the surface characteristics. Four actual geologic cross-sections were surveyed which are Bai Jiangou, Shuangjingzi, Jinshangou and Shaerbulake. Authors divided these craters into three different types-radiated craters, the ring-like crater and half ring-like crater, and summarized five kind of crater identification sign according to these three different type’s craters:①the pearlite of intrusive facies;②the ring-like belt-shaped distribution of volcanic rock lithologic character and facies; ③the deposition of sulfur ore; ④the big area of hydrothermal dissemination; ⑤large-scale cryptoexplosion breccias and packing structure. Finally the importance of crater discovery is discussed.