Abstract: In order to reveal Cenozoic basin prototype of Huanghua Depression and recover its structural evolutionary history，using the theory of structural analysis，this paper makes comprehensive analysis on Cenozoic structural style and its evolution in Huanghua Depression，and two basic styles are proposed in the paper，including extensionaltype，strikesliptype.In basin scale，according to the characteristic of geometry and dynamics，extensional structure type can be divided into eight secondary styles，including extensional depression，extensional downwarpfault depression，graben fault depression，domino half graben fault depression，roll half graben fault depression，duplex half graben fault depression，seesaw fault depression and extensional faultdownwarp depression，and follows the evolutionary sequence of extensional depressionextensional downwarpfault depression extensional fault depression and extensional faultdownwarp depression.This evolutionary sequence is related to rheology feature and extension and deform of lithosphere；strikesliptype is controlled by deep fault，and can be subdivided into en echelon strikeslip structure and fastigiated fault group.

Key words: Huanghua Depression, oilfield structural analysis of block, structural style, evolutionary sequence, fault 