Economic“rational”man is an important support of theoretical economics.From the perspective of“rational”realization of local financial regulatory power,the realization of“rational”of regulatory power is conducted as an entry point to explore local financial supervision issues,the policy makers are described as“the subject of rational behavior”,the“rational”perspective in economics is used to study the realization of local financial regulatory power,which is in line with China’s comprehensive deepening of the process of financial regulatory reform,“the old is not broken,new is not fully established”.The“rational”allocation of local financial regulatory power should use historical materialism to explore its development law,and construct the subject“rational”framework from the dimensions of subjective consciousness,value“rationality”and tool“rationality”.On this basis,it discusses the realization path of the subject’s“rationality”,and further proposes to reshape the relationship between financial development and the real economy,government management and market regulation,central regulation and local supervision.