Sijihong is a town in Yuanjiang, a county-level city administered by Yiyang in Hunan Province, People's Republic of China. It is classified as an urban town, meaning it serves as a seat of local administration and settlement within the county-level jurisdiction of Yuanjiang.
The town lies in the Hunan region of south-central China, an area situated in the basin of the Xiang River and its tributaries. Yuanjiang itself sits near the southern shore of Dongting Lake, one of China's largest freshwater lakes, in the northern part of Hunan.
As with other towns at this administrative level in China, Sijihong functions as a basic unit of local governance below the county level, encompassing a central settlement and the surrounding area. Detailed published information about the town's population, economy, and history is limited.