Guankou Subdistrict () is an urban subdistrict and the seat of Liuyang City, Hunan Province, China. As of the 2015 census it had a population of 50,400 and an area of . Xijiang Township merged to Guankou subdistrict on November 18, 2015. The town is bordered to the northeast by Gugang Town, to the southeast by Gaoping Town, to the south by Hehua Subdistrict, to the west by Jiaoxi Township, to the northwest by Chunkou Town, and to the southwest by Jili Subdistrict.
In 2015, Xijiang Township merged to Guankou subdistrict.
The subdistrict is divided into nine villages and three communities, which include the following areas:
The subdistrict has two reservoirs: Quantang Reservoir () and Daoyuan Reservoir ().
Liuyang River, also known as the mother river, flows through the subdistrict.
The economy is supported primarily by commerce and aquatic products industry.
The East Bus station is situated at the subdistrict.
The ChangshaâÂÂLiuyang Expressway, from Changsha, running west to east through the subdistrict to Jiangxi.
The Provincial Highway S309 runs southâÂÂnorth through the subdistrict.
The LilingâÂÂLiuyang railway, passes across the subdistrict north to south.
Two public parks are located in the subdistrict: Changtang Park () and Sports Park ().