The reservoir sedimentation models are classified into rift model and sag model, which are fully represented in the passive rifts and active rifts, only different in sedimentary cycles that the active rift is bi-model with single cycle and the passive rift is bi-model with multi-cycle. The lithological texture and reservation of reservoir has a good correspondence to rift-sag differentiation that the local reservoir with poor reservation is developed during rift and the regional reservoir with good reservation during sag.