Abstract: In Shengli blocks of central Junggar basin, eight sets of oil?gas show horizons were found, of which oil flow was obtained in seven sets, dominated by lithology of siltstone and non?structural trap, characterized by big differences of depth of oil?gas shows (the maximum deep is more than 6 km), low oil column height. According to the occurrence feature and geologic conditions of oil-gas reservoirs, the main oil?bearing horizons, property differences and the main reservoir types in different blocks were determined. It is recognized that J1s22 and J1s21 in Zhong?1 block are lothologic and litho?structural reservoirs; J2t, J1s and J1b in Zhong?2 block are lithologic reservoirs with nose?like structural setting; J2x and K1q in Zhong?3 block are stratigraphic?lithologic reservoirs, and J2t and K1q in Zhong?4 block are dominated by lithologic reservoir. It is suggested that the structural highs in Zhong?1 and Zhong?3 blocks and the eastern slopes in Zhong?2 and Zhong?4 blocks could be as the targets for petroleum exploration