Longjing City, a county-level city under the jurisdiction of Yanbian Korean Autonomous Prefecture of Jilin Province, is located in the southeast of Jilin Province, at the eastern foot of Changbai Mountain. The geographical coordinates are between 128°54 'and 129°48' east longitude and 42°21 'and 43°24' north latitude. It covers an area of 2208 square kilometers. Longjing City belongs to the temperate continental monsoon climate. As of October 2021, Longjing has jurisdiction over 2 subdistricts, 5 towns, 2 townships, and 2 township units. City people's government in Anmin street. As of midnight on November 1, 2020, the permanent population of Longjing City is 129,286.

Three to four thousand years ago, our ancestors lived the life of the clan commune on the land of Longjing. May 25, 1988, Longjing County approved by The State Council, the county has been established since. Longjing border line is 142.5 kilometers long, with two national land ports, Sanhe and Kaesantun. Sanhe Port is 86 kilometers away from the port of Chongjin, North Korea, and about 1,000 kilometers away from the port of Niigata, Japan. It is an ideal channel for China to enter the Sea of Japan via North Korea. Longjing is the second batch of counties for the protection and utilization of revolutionary cultural relics, the eighth batch of demonstration units in the National Demonstration Zone of National Unity and Progress, and the National County for the quality and safety of agricultural products. The main scenic spots are Jilin Tianfozhi Mountain National Nature Reserve, Mingdong Yin Dongzhu's former residence, Horseshoe Mountain tourism Resort.
In 2021, the annual GDP of Longjing was 3.353 billion yuan.