Donggang City, a county-level city under the jurisdiction of Liaoning Province, is managed by Dandong City. The geographical coordinates are 123 ° 22 ′ 30 ″ to 124 ° 22 ′ 30 ″ east longitude and 39 ° 45 ′ to 40 ° 15 ′ north latitude. The river coastline (border line) within the territory is 23.85 km, and the coastline is 126 km, which is located in the southeast of Liaoning Province and the southwest of Dandong City; South of the Yellow Sea; To the north and northwest are Fengcheng City and Xiuyan Manchu Autonomous County; Adjacent to Zhuanghe City in the west; The northeast is connected with Zhen'an District of Dandong City; Across the Yalu River to the east, it faces Longchuan County, North Ping'an Road, North Korea. With the geographical advantages of coastal, riverside and border areas, it is the northernmost county-level city on China's coastline.

Donggang has a land area of 2445 square kilometers and a sea area of 3500 square kilometers; It has jurisdiction over 3 streets, 14 towns and 1 ethnic township; At the end of 2021, Donggang has a total population of 583789 with registered residence. In 2021, the city will achieve a gross regional product (GDP) of 24.36 billion yuan, an increase of 6.8% at comparable prices.

Donggang City is located at the intersection of the three economic circles of Northeast Asia, the Bohai Sea Rim and the Yellow Sea Rim. It is a transportation hub connecting China, North Korea, South Korea, Russia and Japan, an important node of the Eurasian thoroughfare, and an important sea and land portal in the eastern part of Northeast China. Donggang is the largest jellyfish breeding base and swimming crab breeding base in China, the national strawberry production and research center and the largest high-quality production base.

In March 2020, it won the title of National Advanced County for Village Clean Action, and was praised by the Central Agriculture Office and the Ministry of Agriculture and Rural Affairs.