Abstract: In S3 phase Huang Hua depression was in a period of intense fault and subside.There widely existed the deposits of debris flow,clastic flow, grain flow, turbite flow and slumping, They made up three kinds of deposition systems of near bank fan, subqueous near bank fan and sublake fan in the main form of the normal cycle sequence. Mainly taking Bai Ge Zhuang---Lou Zhan, Yang Er Zhuang and Gang Zhong districts for example, this paper makes detailed research on the deposition characteristics of gravity flow, the evolution,the contribution and deposition models of all kinds of fan systems.