Bashansi Township, belonging to Linfen City, Shanxi Province, Jixian, is located in the southwest of Jixian County, east of Jichang Township, south of Xiangning County, Zaoling Township, west of the Yellow River and Yichuan County, Shaanxi Province, north of Dongcheng Township. The township people's government is located about 22 kilometers away from the county town. The total area is 186.49 square kilometers. As of the end of 2020, the household population of Bashansi Township was 13,114.
In 1949, it belonged to the third district of Jixian County, and in November 1958, it belonged to Xiangning County, and in 1961, it belonged to Hongshan Commune of Jixian County, and in November 1984, it was changed to Bashansi Township. As of October 2022, Bashansi Township has 11 administrative villages under its jurisdiction, with the township people's government stationed in Guanzhuang Village.
In 2011, the per capita net income of farmers in Bashansi Township was 1,380 yuan.In 2020, there will be 6 comprehensive stores or supermarkets with business area of more than 50 square meters in Bashansi Township.