Xinjin County (under the jurisdiction of Chengdu County) generally refers to Xinjin District
Xinjin District, affiliated to Chengdu, Sichuan Province, is located in the southern suburbs of Chengdu, along the Minjiang River. Xinjin, named after the Northern Zhou Dynasty, is one of the birthplaces of ancient Shu civilization in Chengdu Plain, a member of Chengdu-Chongqing Shuangcheng Economic Circle Demonstration Zone, and the southern gate of Chengdu. It is adjacent to Shuangliu District in the east, Pengshan District in Meishan City in the south, Qionglai City in the west, Dayi County and Chongzhou City in the north, and has an administrative area of 330 square kilometers, with jurisdiction over 4 streets and 4 towns. According to the 7th census data, as of 0:00 on November 1, 2020, the resident population of Xinjin District was 363,591. Huayuan Street in the north is 19 kilometers away from Chengdu city, 10 kilometers away from Southwest Airport.

From 2008, 2009, 2012 to 2016, Xinjin won the title of "Top Ten Counties in Sichuan Province". In October 2018, Xinjin District was selected as one of the top 100 counties and cities with National investment potential, one of the top 100 counties and cities with National Green Development in 2018, and one of the top 100 counties and cities with National quality of new urbanization. In December 2018, it was selected as one of the top 100 counties in terms of economic investment potential. One of the top 100 counties and cities for quality of new urbanization in 2019. The top 100 counties and cities in Western China. On June 19, 2020, the official website of Sichuan Provincial Government published the reply of the People's Government of Sichuan Province on the cancellation of the establishment of Xinjin District of Chengdu in Xinjin County. On June 30, Xinjin District of Chengdu was officially opened.

In 2020, the GDP of Xinjin District was 400.59 billion yuan, calculated at comparable prices (the same below), an increase of 6.0% over the previous year. The value added of the first industry was 2.33 billion yuan, up by 5.3%; The added value of the secondary industry was 16.536 billion yuan, up by 5.0%; The added value of the tertiary industry was 21.193 billion yuan, up by 7.4%. The proportion of tertiary industries is 5.8:41.3:52.9, and the contribution rate of tertiary industries to GDP is 4.7%, 44.1% and 51.2% respectively. [53] On November 17, 2020, it won the 2020 China Building Economy Investment Highland City Award.