Abstract: Abstract: It is much more complex and difficult to study Archean stratigraphy than Phanerozoic stratigraphy. In studying Archean stratigraphy, we should make an integrated study of petrology, stratigraphy, structural geology and geological events, and, on that basis, use new techniques, especially those of geochronology. Furthermore, the following aspects should be emphasized: 1. make clear whether there are any complex isoclinal folds in nominal "monoclinic strata"; 2. determine correctly the types of rock and their attributes; 3. identify polyphase deformational overprints and how to correlate them with regional metamorphism; 4. understand the problems and pitfalls in geochronologic study; 5. clarify the nomenclature of the special units of rocks; 6. distinguish correctly the metavolcanic or sedimentary sequence and the possible structural contacts between the different units.