Located in the interior of North China Block, Zhoukoudian area, which is typical in North China, has well-developed stratigraphic sequence. However, influenced by the deuteric and later alterations of metamorphism, tectonism and magmatism, the whole stratigrapbic sequence of Zhoukoudian area has been intensively metamorphosed and deformed in a certain extent, which has caused great difficulties to related geological studies. With the comparative analysis of the unmetamorphosed strata in the neighboring areas of Beijing, the primary sedimentary sequence had been reconstructed in Zhoukoudian area and the paleo-environments were concluded. Some key stratigraphic units were refined or redefined. All the lithostratigraphic units of Zhoukoudian area were framed on the new international stratigraphic chart. The reconstruction of the sedimentary stratigraphic sequence and paleo-environment indicated that Zhoukoudian area was situated in a unique paleogeographic locality, which was probably linked to the later particularly significant tectonic activities and metamorphism in the area.