Delta facies were widely developed in the Member 2 of Sangonghe Formation of Lower Jurassic in central Junggar Basin. During the sedimentary period of the Member 2 of Sangonghe Formation, the northeastern part of the study area was characterized by large-scale braided river delta front with sliding turbidite sediments, while the northwestern part was characterized by fan delta sediments. In the central part, these two sediments jointed together. The Upper part of the Sangonghe Formation was meandering river delta front sediments. A great deal of initial pores and secondary pores were developed in the sandbody, while diagenesis doesn’t revise the capability so strong. The channel microfacies of the braided river delta front in the lower part of Member 2 of Sangonghe Formation is type Ⅰand Ⅱ reservoir with large porosity and middle permeability. The branch channel and fleet sandbody microfacies of meandering river delta front are type Ⅱand Ⅲ reservoir with middle porosity and middle to low permeability.