The benign coupling of the main system,the environmental system,and the functional system of the rural financial ecology is an important prerequisite for its sustainable development.In order to minimize the operation cost and maximize the benefit and function of the rural financial ecosystem,and excavate the shackle of multivariate coupling mechanism of the rural financial ecology,this paper explored the establishment of multivariate coupling mechanism of the rural financial ecology from three perspectives,namely coupled mode selection,coupled carrier selection and coupling evaluation based on a multiple dimension of “point- line- surface- body”.It proposed a series of optimizing strategies,such as body optimization,environment optimization,and function optimization to pave a way for the development of the mechanism.And the smooth operation of the mechanism required an emphasis on “basic points”,“context line”,“supporting surface”,and “protection body” so as to further promote the rural financial reform.