Zhashui County, subordinate to Shangluo City of Shanxi Province, is located in the northwest of Shangluo City, bordering on Shangzhou District and Shanyang County in the east, Zhen 'an County in the south, Ningshan County in the west, and Xi 'an Chang 'an District and Lantian County in the north, with an area of 2332 square kilometers. As of October 2022, Zhashui County has jurisdiction over 1 subdistrict and 8 towns. By the end of 2021, Zhashui County has a permanent resident population of 136,800.

Zhashui County was named after ancient Zhashui. Xia belongs to Yongzhou. Spring and Autumn period, belong to Chu. Qing Emperor Qianlong forty-eight years (1783), set up Xiaoyi Hall, Shanxi Province, Xi 'an County, the road under the jurisdiction of the road. In the third year of the Republic of China (1914), it was renamed Zhashui County and administered by the Office of the four District Inspectors and Commissioners of Shanxi Province. In December 1958, Zhashui County was abolished and merged into Zhen 'an County. In September 1961, Zhashui County was set up separately. On July 19, 2019, Zhashui County was awarded the title of "China's Natural Oxygen Bar" by the China Meteorological Administration.

In 2021, Zhashui County achieved a GDP of 9.727 billion yuan and per capita disposable income of 18,625 yuan.