The Zhongguai region in the northwestern margin of Junggar Basin is an important benefit of natural gas exploration areas, whose main target stratum is Permian Jackwood River Group with simple structure, dense reservoir, is a typical of dense conglomerate gas. The early laumontite cements and the late dissolution control reservoir properties in the area. The favorable block predicted mainly concentrated in Xinguang 1 well to Guai 91 well areas, and predicting the impedance value is basically located in the lower parts of the structure in the Che 91 wells area and Chepaizi region.