The Fangshan Line is 31.8 km long and has 16 stations.
On December 30, 2010, the line began operating from Suzhuang to Dabaotai, but was not connected to any other line until exactly a year later, when the Dabaotai to Guogongzhuang section opened, linking it with Line 9 and the rest of the subway network.
An expansion of the line came on December 30, 2017, with the opening of the one-station western extension to Yancundong. The line was extended further north from Guogongzhuang Station to the southwest corner of the Third Ring Road. The extension has 5.25 km of new route tunnel all underground. The northern extension opened on December 31, 2020. In 2021 it was announced that there would be some through service between Line 9 and the Fangshan line (similar to Line 4/Daxing and Line 1/Batong). The operator is retrofitting the signal systems of both lines to achieve this.
The artwork was the brainchild of Ren Shimin Studio and can be found at:
Dabaotai
Changyang
Libafang
Liangxiang University Town
Yancun East