Abstract The Upper Devonian in Ziyun, Guizhou is mainly composed of carbonate rocks, several sets of gravity flow depoits and two sets of strom depoits developed in the layers. gravity flow is characterized by debris flow’s filling of multi-period calcarenite with matrix support，The strom sedimentary characteristics include erosional structures、swaley cross-bedding、graded bedding、drainage structure and et al. The research indicates that gravity flow in this area develop 3 types of depositional succession group. The 3 types of succession group indicate deeper water of palaeogeography environment, that confirms the existence of Dianqiangui Basin within platform and trench face in Devonian，the discovery of tempestite indicates study area in Late Devonian should be located in the low-latitude situation near the equator during late Devonian, the climate was warm，the water was clean.