Ediacaran is a new system addition to the Stratigraphical Time Scale, which lies on the uppermost of the Neoproterozoic. Its GSSP (Global Boundary Stratotype Section and Point) have been affirmed in the Enorama Creek section in the central Flinders Ranges, South Australia and the point of the lower boundary was selected at the base of the Nuccaleena cap carbonate stood on the top of the uppermost Elatina diamictite (Gradstein et al., 2004; Knoll et al., 2004). The redefined Sinian System in China, bounded by the base of the cap carbonate (the lowermost Doushantuo Fm.) just above the Nantuo diamictite, quite corresponds with the Ediacaran System. In this paper, we synthesized new data on the Neoproterozoic at home and abroad and summed up advances in the chronostratigraphy of the Ediacaran Period, existing questions and developments in future, so that brings the attentions to the Precambrian stratigraphers and paleontologists.