Abstract: This paper uses a PLSTR model to study the influential mechanism between rural financial develop ment and agricultural economic growth． The results show that improving rural financial related rate may restrain agricultural economic growth during the primary stage of rural financial development，but en hancing capital efficiency will cause an adverse effect． And when the financial related rate exceeds its threshold level，improving rural financial related rate can promote agricultural economic growth promi nently，which indicates that with the development of inclusive finance，the influential mechanism be tween them has changed obviously． Therefore，the government and fiscal sector should guarantee the accuracy of their policies and make exact judgments on the character of rural financial development in different regions，using different strategies，and then build a more inclusive rural financial system，and find a new source of macro－economic growth so that it can find a new growth point in the‘New Normal ity’.

Key words: Rural Financial Development; Agricultural Economic Growth; PLSTR Model; Financial Correlation Rate