It belonged to Zhao in the Warring States Period and was located in Pingcheng County in the Han Dynasty, ruled by the eastern part of Yanmen County. Abandoned county in the last years of Jian 'an. Wei Fuping County in the Three Kingdoms is a new county, and Jin is Yanmen County. Tianxing in the Northern Wei Dynasty. In the first year (398), the capital was established here, and it was also a state, representing Yin. In the seventeenth year of Taihe (493), after moving the capital to Luoyang, it was renamed Pingcheng County, which was also ruled by Hengzhou. In the second year of Xiaochang (526), six towns revolted and Pingcheng was reduced to ruins. In the seventh year of Tianbao in the Northern Qi Dynasty (556), it was called Heng 'an Town, belonging to Taiping County. Sui still called Heng 'an Town Mayi County. In the sixth year of Tang Wude (623), Beihengzhou was established and abolished the following year. In the 14th year of Tang Zhenguan (640), Dingxiang County was renamed Yunzhouzhi. In the early years of Yongchun, the counties were abolished. Therefore, the place of governance is now twenty-eight miles northwest of Datong. In the 18th year of Kaiyuan (730), Yunzhong County and Yunzhou were established. Yunzhong County was called Yunzhou County in the Five Dynasties, so it ruled in Dongwuli, Datong City today. In the 13th year (1044), Liao Chongxi was established as Xijing in Datong, and in the 17th year (1048), Datong County was subordinate to Guo. Therefore, the name of datong county remains unchanged. Jin is still called Xijing, also known as Datong House. In the second year of Yuan Dynasty (1265), Yunzhong County was merged into Datong County, and in the twenty-fifth year (1288), it was ruled by Datong Road. Ming Hongwu served as viceroy of Hangdu and Datong in five years (1372) and seven years (1374). The Qing dynasty was still ruled by the Datong government. In the early years of the Republic of China, Datong County belonged to Yanmen Road. 1937 10 Japanese troops invaded Datong. Our party adheres to the guerrilla war against Japan in rural areas. Building things, datong county. East datong county belongs to the Shanxi-Chahar-Hebei border region, and west datong county belongs to the Shanxi-Suiyuan border region. May 1949, 1 liberation, the establishment of Datong city, under the Chahar province. 1952165438+10 returned to Shanxi province. 1July, 993, the original Yanbei area was revoked, and Yanggao County, Tianzhen County, Zuoyun County, hun yuan County, Guangling County and Lingqiu County belonging to Yanbei area were placed under Datong City.