This paper firstly analyzed current situations of financial support for rural cooperative economy in China and tested the correlation between rural finance and rural cooperative economy using the grey correlation analysis method. Results indicate that there is close relationship between amount, structure and efficiency of rural finance and development of rural cooperative economy. The amount of rural finance has the largest promotion function to development of rural cooperative economy, the next is rural finance structure, and the least is efficiency of rural finance. Based on research conclusions, it came up with pertinent policy recommendations.