In the process of further transferring to the county of the space of economic and social development, how to solve the financial predicament at the county level, stimulate the vitality of county development and improve the people’s livelihood security system at the county level through the adjustment of the financial system have become the core content of the financial system reform below the province level. Finance is a kind of distribution system of “controlling finance by government and administrating through finance” with the state regime system as the main body. It has great significance for the government to perform and transform its functions. Financial reform will inevitably become an important part of the overall reform. Based on the decentralized reform mode under the province, this paper investigates the economic performance of the reform of the County Administrated by Province and the transmission mechanism of the reform from the two aspects of economic growth speed and industrial structure adjustment.