Through study, it is found that since 1952, there has been a long-run equilibrium relationship between China's rural financial market growth and rural economic growth, the government-led rural financial market growth has effectively supported rural economic growth, and increasing the farmers' financing ratio has always helped to boost long-term growth of the rural economy. However, dominated by market mechanism from 1978, there is only one-way support relationship: rural economic growth brings about quantitative growth of rural financial market.