The article analyzes from the perspective of the principles of international economics, the main influencing factors of the changes in the import and export trade volume of my country's agricultural products are: exchange rate, international food prices, etc. In order to further promote the healthy development of my country’s grain trade, my country should increase food policy support, increase investment in agricultural production technology, drive by multi-dimensional data models, design model analysis engines, and output model examples for specific platforms to build a data warehouse. Actively look for food export measures to cope with price advantages. Further opening up the grain trade market and increasing grain imports by an appropriate amount will become a basic trend.