Based on the analysis of core observation, logging and seismic data, the Toutunhe Formation of Middle Jurassic in Fudong Slope Zone is divided into one long term, three middle term and ten short term cycles under the theory of high resolution sequence stratigraphy. Summarizes, there are two basic structure types of base level cycle with many sub types, and divisions on the whole cycles and stratas are basically identical. Because many oil layers are distributed in two short term cycles named SSC4 and SSC7 by searching of oil production test data, the sedimentary characters in main short term are needed detailed analysis that braided delta front deposits developed, which is mainly comprise of four sedimentary micro facies, such as underwater main channels, distributary channels. Through well connection contrasts, establishment of isochronous stratigraphic framework, compilation of sedimentary micro facies in uprising of cycles and description of sandbody distribution in vertical and plane, it shows thickness and connectivity of sandbodies in SSC7 are better than that developed in SSC4, which is more favorable for reservoirs development.