The three major capital surpluses are industrial capital, financial capital and commercial capital. At present, there are three major capital surpluses in China, namely industrial capital, financial capital and commercial capital. Excess of financial capital is manifested in that financial capital intensifies price fluctuation by investing in raw materials and agricultural products futures, and transfers the crisis to agricultural producers and consumers. The surplus of industrial capital shows that a large number of surplus production capacity is absorbed by lengthening the industrial chain, which leads to an oversupply of global grain output and grain heat, while the proportion of producer income in grain expenditure is gradually decreasing, which means it is increasingly difficult for farmers to make money. The surplus of commercial capital is manifested in the dilution of profits by multiple circulation links, which further intensifies the vicious competition in circulation links.