Based on the study of the high resolution sequence stratigraphy of Putaohua Formation referred to the data of core, seismic, well logging and laboratory test, the regional distribution of sedimentary facies and the characteristics of microfacies were discussed. It was presented that Putaohua Formation is shallow lacustrine delta deposit which is mainly composed of delta fore- facies zone and differs from typical delta deposit mode in three aspects, including that: fore delta zone spread over the whole lake basin, being exposed frequently above water level, with deep and semi -deep lacustrine facies relatively undeveloped; distributary channels were sheeted by lake water, and were divided into three types, including poorly sheeted, moderately sheeted and intensely sheeted; being without topset bed, foreset bed and bottomset bed, sedimentary mode of shallow lacustrine delta differs from typical Gilbert delta deposit. The distribution mode of shallow lacustrine delta fore- facies zone was established based on the sedimentary characteristics of different system tracts ( LST, TST, HST) , represented in lobate delta, braided stream delta and branched delta modes respectively.