Guankou Subdistrict (simplified Chinese: 关口街道; traditional Chinese: 關口街道; pinyin: Guānkǒu Jiēdào) is an urban subdistrict and the seat of Liuyang City, Hunan Province, China.

[2] Xijiang Township merged to Guankou subdistrict on November 18, 2015.

In 2015, Xijiang Township merged to Guankou subdistrict.

The economy is supported primarily by commerce and aquatic products industry.

The Changsha–Liuyang Expressway, from Changsha, running west to east through the subdistrict to Jiangxi.