By using neo-classical economic growth model,this paper identifies the theory relationships between the modest financial capital and economic growth.Based on VAR model,this paper also empirically examines the quantitative relationships between the rural financial capital and agricultural economic growth in China.The result shows that the rural financial capital was not adapted to the agricultural economic growth in China from 1985 to 2011.The deepening of exogenous rural finance has not become the positive factor to promote agricultural economic growth.On the contrary,the capital ratio of endogenous rural finance and agricultural finance is beneficial to the agricultural economic growth.