The history of the city of Dandong is closely interwoven with its strategic location on the Yalu River, which serves as a natural border with the Korean Peninsula. For centuries, this territory has been an important outpost and trading hub in Northeast China.
Although the name "Andong" ("Pacified East") was used for this area as early as the Tang Dynasty in the 7th century, the modern city received its formal status much later. In 1876, during the Qing Dynasty, Andong County (安东县) was officially established to strengthen control over border territories and manage growing trade. In 1937, the urbanised part of the county was separated into the distinct city of Andong. The city received its current name, Dandong ("Red East"), in 1965.
The city's development was defined by several key factors. Its geographical location on the banks of the border river, the Yalu, transformed Dandong into a key transport and trade hub connecting China and Korea. From the late 19th century, the city became an important centre for border trade, particularly in timber floated down the river. Its status as a port city contributed to rapid economic growth. Furthermore, as a border city, Andong (now Dandong) played a significant military and political role, especially in the first half of the 20th century. The Sino-Korean Friendship Bridge stands as a symbol of its strategic importance.
Initially, Dandong's economy was built on logging and river trade. Over time, it evolved into a diversified industrial centre with developed textile (including silk production), paper, and food industries. Culturally, the city has always been a place where Chinese and Korean traditions blend, which is reflected today in its architecture, cuisine, and population demographics, featuring a significant Korean community.