The name of Xinmin County comes from Xinmintun in the early Qing Dynasty (Later Jin Dynasty). According to the "Research on Manchurian Place Names", there were very few original residents here. In the early years of Qianlong's reign in the Qing Dynasty, many new immigrants were r

The name of Xinmin County comes from Xinmintun in the early Qing Dynasty ( and later Jin Dynasty). According to the "Research on Manchurian Place Names", there were very few original residents here. In the early years of Qianlong's reign in the Qing Dynasty, many new immigrants were recruited to cultivate the area, and a village was formed, commonly known as Xinmintun. When the county was established, it was named after the new people. In the fourteenth year of Chongzhen (1641) and in the eighth year of Shunzhi (1651), a large number of victims were transferred from Shandong and Hebei to the Northeast to reclaim wasteland. At that time, the Han people were called "people of the people", and the places where the "people of the people" came first were called "mintun". This is how the current "mintun" in the eastern suburbs commune was formed. Later, the Han people living together in the east of Liaohe River were divided into large and small "mintuns". Soon some Han people moved to Xinmin Town and settled in Xinmin Town. In order to distinguish it from "mintun", it was named Xinmintun. Xinmin County was named after the specific name of the settlement.

Xinmin County was the land of Yan during the Warring States period. Qin belongs to Liaodong County . During the Han Dynasty, it belonged to Youzhou and Liaodong Yu. During the Wei and Jin Dynasties, the west belonged to Liaodong County, the east belonged to Xuanjia County, and Wangping County (now Anpingbao Nanda Ancient City) was located within its territory. In the Sui Dynasty, the northeast belonged to Liaodong County and the west belonged to Yan County. In the Tang Dynasty, the western part belonged to Yingzhou and the eastern part belonged to Andong Duhufu . Liao is the land of Liaozhou and belongs to Liaobin County. In the Jin and Yuan Dynasties, it was under the jurisdiction of Shenzhou and Guangning Prefecture. Ming belongs to Shenyang Zhongwei, Guangningwei . In the early Qing Dynasty, it belonged to Guangning and Chengde counties. In the 21st year of Kangxi (1682), inspection of Juliu River was set up. In the early years of Qianlong's reign, inspections were moved to Xinmintun, which was the beginning of the name Xinmin. In the 13th year of Jiaqing, the western border of Chengde and the northeastern border of Guangning were under the jurisdiction of Xinmin Hall . In the twenty-eighth year of Guangxu (1902), it was promoted to Xinmin Prefecture, and the villages in the southeast and southwest of the prefecture including Manduhu, Xifo Niulu, Bajiaotai and Shaling were classified as Liaozhong County. Soon after, the Tai'an County was built with an octagonal platform, and the Panshan Hall was changed to Shaling. In the same year, the Faku Hall was newly built. The county boundary was marked by the old pagoda base of Xiaotazi. The north of the pagoda belonged to the Faku and the south of the pagoda belonged to Xinmin. In the 33rd year of Guangxu (1907), it was affiliated to Fengtian Province. In the first year of the Republic of China (1912), the prefecture was changed into a county and it was affiliated to Liaoning Province. During the Japanese imperialist occupation in 1931, it was still Xinmin County and belonged to Fengtian Province. After 1945, Xinmin County was once occupied by the Kuomintang.

On December 29, 1948, the Xinmin County People's Government was established, under the jurisdiction of Liaobei Province. In April 1949, it was placed under the jurisdiction of Liaoxi Province. In August 1954, Liaodong and Liaoxi provinces merged and came under the jurisdiction of Liaoning Province. On June 14, 1993, with the approval of the State Council, Xinmin County was abolished and Xinmin City was established.