Sanjiang Dong Autonomous County, belonging to Liuzhou City, Guangxi Zhuang Autonomous Region, is located in the northern part of the Guangxi Zhuang Autonomous Region, at longitude 108°53′-109°52′ E, latitude 25°22′-26°2′ N. It has a total area of 2,454 square kilometers, and is connected to Longsheng Autonomous County and Rong'an County in the east, to Rongshui County and Congjiang County, Guizhou Province, in the west, and to Taoxiang County, Hunan Province, and Liping County, Guizhou Province, in the north, and to Rong'an County in the south, Rongshui County in the south. The county town of Guyi is 203 kilometers from Liuzhou City and 167 kilometers from Guilin City.In 2017, it had jurisdiction over 6 towns and 9 townships. According to the seventh population census, as of 00:00 on November 1, 2020, the resident population of Sanjiang Dong Autonomous County was 321,538 people. Sanjiang Dong Autonomous County, the junction of Hunan, Guizhou and Guizhou provinces (regions), belongs to the subtropical Nanling humid climate zone and mountain valley climate zone. Famous attractions include Shimenchong Natural Ecological Scenic Spot, Chengyang Bazhai Scenic Spot, Danzhou Scenic Spot, etc. On November 14, 2019, Sanjiang Dong Autonomous County was named the third batch of national ecological civilization construction demonstration counties by the Ministry of Ecology and Environment.2020 China's Top 100 Counties and Cities in Water Purification. on November 20, 2020, the People's Government of the Guangxi Zhuang Autonomous Region approved to withdraw from the sequence of poverty-stricken counties. In 2020, Sanjiang Dong Autonomous County realized a regional GDP of 7.844 billion yuan, a year-on-year increase of 5.9%.