In this paper, based on the well and 3D seismic data, the epoch, structure and evolution of Upper Miocene deep water channel in Congo Fan Basin is analyzed. For the purposes of describing the internal architecture clearly, we divided the channels system into different grade channel complex and individual channel, which based on their sequence stratigraphic setting. Individual channel is mainly composed by 6 microfacies. The different stages show the different filling architecture and distribution of 3th channel complex, which is controlled by the sea-level changes, the slope gradient and the rheological properties of gravity flow.