International Trade, also known as trade, refers to cross-border transactions of goods and services, generally composed of import trade and export trade, so it can also be called import and export trade. International trade is also called world trade. Import and export trade can adjust the utilization rate of domestic production factors, improve the international supply and demand relationship, adjust the economic structure, increase fiscal revenue and so on.

International trade belongs to the discipline of economics, mainly based on economic theories, including microeconomics, macroeconomics, international economics, econometrics, introduction to world economics, political economy, etc.

Since the major of international economics and trade is economics, it is naturally inseparable from the study of mathematics. Calculus, linear algebra, probability theory and mathematical statistics are essential, and the study of econometrics, international economics, statistics and other disciplines must have a relatively solid mathematical foundation. Engaged in international trade, English should be quite good, not only written English, such as foreign trade English correspondence, oral English is also very important.