Heshan Subdistrict is a subdistrict and the seat of Heshan District in Yiyang Prefecture-level City, Hunan, China. The subdistrict was reformed through the amalgamation of Longguangqiao Township and the former Heshan Subdistrict on November 26, 2015. It has an area of 126.98km2 with a population of 145,500 (as of 2010 census).[1]