Longxin Township, belonging to Longling County, Baoshan City, Yunnan Province, is located in the central part of Longling County, bordering Bizhai Township in the east, Xiangda Township in the south, Longshan Township and Mangshi Township, Mang City, Dehong Dai Jingpo Autonomous Prefecture in the west, and Zhen'an and Longjiang Townships in the north, with an area of 325.16 square kilometers of administrative area. As of the end of 2019, Longxin Township has a household population of 33,764.
In the fifteenth year of Ming Hongwu (1382), it belonged to Bengmiao Lai Tushe; in April 1984, the commune was changed to a district; in December 1987, the district was withdrawn and Longxin Township was established. As of June 2020, Longxin Township has 5 communities and 6 administrative villages under its jurisdiction, and the township people's government is located in Longxin Village.
In 2019, Longxin Township has 38 industrial enterprises, including 6 above scale, and 13 general stores or supermarkets with business area over 50 square meters.