Hejin City, a county-level city under the jurisdiction of Shanxi Province, is located in the southwest of Shanxi Province and the northwest of Yuncheng City, covering an area of 593 square kilometers. As of March 2021, Hejin has jurisdiction over 4 subdistricts, 3 towns and 2 townships. Municipal street in the city. According to the seventh census data, as of midnight on November 1, 2020, Hejin's permanent population was 392,561.

In the second year of Xuanhe (1120) of the Song Dynasty, Longmen County was changed into Hejin County, which got its name because of the Yellow River ferry. On January 12, 1994, Hejin City (county-level city) was established with the approval of The State Council. In October 2000, with the approval of The State Council, Yuncheng Administrative Office was abolished and Yuncheng prefecture-level city was established under the jurisdiction of Yuncheng City. [6] There are scenic spots such as Xue Rengui's hometown and Zhenwu Temple.

In 2018, Hejin's GDP reached 23.71 billion yuan, an increase of 7.4% over the previous year at comparable prices. The value added of the primary industry was 860 million yuan, up by 3.0%; The added value of the secondary industry was 14.92 billion yuan, up by 7.6%; The value added of the tertiary industry was 7.93 billion yuan, up by 7.7%. In 2020, the GDP of Hejin reached 25.99 billion yuan, an increase of 4.6%. In 2021, Hejin's GDP reached 34.8 billion yuan, an increase of 8.3%.