China's rural credit system faces greater risk due to the current character of agriculture, countryside and farmer, and the basic rural economic system. A more serious problem is the lack of compliance collateral in rural areas, so regular, effective credit risk controls in the city is not entirely suitable for the rural credit. However, rural social capital has an economic value, and can be involved in rural credit risk control, particularly as collateral. This idea has been widely used at home and abroad, especially in the most successful micro-finance model. China is rich in social capital in the rural areas and has endless development potentials. Some recommendations: take the new rural construction as an opportunity to reshape the ethical and trust networks in the rural areas; build a rural credit system; improve the credit record of farmers; improve rural infrastructure and service network to enhance communication skills of rural residents; support and standardize the rural cooperative organization and the development of private finance in the rural areas; encourage and support active participation of rural financial institutions to create a new type of rural social capital.