Abstract:The investment of government fiscal in agriculture is one of the most important components of the total agriculture investments. The available space and shares of the government fiscal investments in agriculture have been very large since china became a member of WTO. The effects of WTO on China's agriculture, rural areas and farmers, and the policy suggestions of government fiscal investment in agriculture in the permissible range of "green-box policy" were put forward, that is, increasing the total investment, optimizing the investment structure, reforming the administration system of investment, transforming the operation system of investment, improving the investment assessment administration system and making a favorable environment of investment