Abstract: It is early paid attention to by geologists that geofluids flow along large fault from deep to shallow due to the close relationships of faulting structure to minerals, hydrocarbons and earthquake. With the in-depth researches, it is recognized that there exist spatio-temporal coupled relationships between faulting and fluid flow, which is the result of the interaction among fluid pressure (fluid potential)， ground stress and faulting activity. A series of coupled dynamic models on fault and fluid flow are developed that give us new thoughts for the study of the relationships between fault and hydrocarbon distribution， and have more importance to correctly understand multistage migration and accumulation of hydrocarbon.

Key words: fault, fluid flow, dynamics, couple