Abstract:agricultural science and technology. Brazil has developed rapidly from which relied on the traditional farming mode to whose agricultural science and technology is in the forefront of the world. the mechanism of its scientific and technological cooperation, especially the implementation of the global agricultural science and technology strategic plan, is worthy of China"s thinking. This study describes the basic situation and main achievements of international cooperation of agricultural science and technology in Brazil and China, compared to the international cooperation mechanism of agricultural science and technology from the purpose, forms and content in Brazil and the Chinese. Finally, the paper proposes china can formulate strategic positioning and development strategy of international cooperation in the development of agricultural science and technology from the following several aspects in the background of the Belt and Road": Promoting the global strategic layout of agricultural science and technology cooperation, and enhance the independent innovation ability of agricultural science and technology; Strengthening the capacity building of international agricultural scientific and technological cooperation work; Constructing international financial support system for agricultural science and technology cooperation; Promoting agricultural enterprises to participate in international cooperation of agricultural science and technology.