Abstract:With the use of sequence stratigraphy principle,the low Tertiary scdinxents in the Langgu depression cara be divided into three seqztences,sequence consisting of Sha-2 member and Kongdian formation,Sha-3 member sequence,and sequence of Sha-2 member and Dengying formation.Each seqzzcnce can be suLdivided into Iowstand,transgression and highstand depositional systean tracts which consist of basin-floor fan,slope fan,slump fan,condensed section and various progradational wedges. The preliminary application show that,the general principles of.sequance stratigraphy also can be applied to Tertiary continental basins in China provided that proper modificatien and supplement are made.