The Sino-Vietnamese border refers to the national boundary between China and Vietnam. The total length of the boundary line is 1.300 km, which starts from mangshi Port, Menghai County, Xishuangbanna, Yunnan Province, China, and ends at Haikou Economic Zone in the south of central Vietnam.

The Sino-Vietnamese border is an important international border. The two countries have conducted many negotiations on this border, and finally agreed to take Bangonghu Port to Longjing Shuidong Port as the border between the two sides. This border line is not only of great significance to the economic and trade cooperation between the two countries, but also directly affects the lives of the two peoples.

The Sino-Vietnamese border is a turbulent area. Due to various historical reasons, there have been many disputes and conflicts on this border. However, the two governments have always insisted on resolving disputes through peaceful negotiations and maintaining peace and stability in the border areas. Today, the relationship between China and Viet Nam is getting better and better, and the cooperation between the two countries in the border areas is getting closer and closer. Maintaining peace and stability in the border areas remains an important task for both countries.