Longtanzi street office in 1996 by the former double road street office evolved from the area of 10.8 square kilometers, a population of 19,073 people, with a double-dragon East Road, Longtan Park, Lian two slopes, Taiping and Longxing and other five communities. There are 49 enterprises in the district, including 6 enterprises above scale, mainly engaged in special vehicles, auto parts, construction, logistics, raw coal mining, etc. In 2011, the total output value of enterprises above scale reached 325 million yuan, an increase of 31% year-on-year. At present, the jurisdiction of the district's key projects under construction are: Longjing Lake Reservoir, in the garden, sewage pipe network, Bayeux Avenue and the eastern section of the North Ring Road 3 scenic upgrading and other projects.