Sanhuikou Township is located in the northwestern part of Kaixian County in Chongqing Municipality, with an altitude of 320-1353 meters, a total area of 77.28 square kilometers, and a cultivated area of 1334 hectares. East and Kaixian Tianhe Township, Jiulongshan Township, South and Kaixian Township, West and Kaijiang County, Sichuan Province, Lingyan Township, North and Xuanhan County, Sichuan Province, such as townships bordering on the Xiaoxia, the Department of Kaixian, Kaijiang, Xuanhan County, three counties junction, Kaixian County, Sichuan, Shaanxi, a shortcut to enter the road must be by the place, but also through the generations of the military must fight for a strategic location, leaving behind the "soldiers prepare three thousand iron armor, the ground even two hundred male passes It is also a strategic place for soldiers, leaving behind the reputation of "three thousand iron armors for soldiers and two hundred strong passes for the earth".