This book targets the international sale of goods, focuses on the terms of trade contracts, is based on international trade practices, and combines my country's foreign trade practice to systematically and completely introduce the basic theory and basic knowledge of international trade in goods practices. Compared with the previous edition, this book introduces the content of "Incoterms 2020", adds a chapter on "Cross-border E-Commerce", and updates cases and teaching videos. It has richer theoretical knowledge, stronger practicality, and is more conducive to readers' learning. This book is suitable as a teaching material for teachers and students majoring in international economics and trade. It is also suitable as a reference reading for MBAs and personnel who plan to engage in import and export business, international business, and foreign economic management.