The Changping Line runs parallel to, and to the east of, the Badaling Expressway, passing near Shahe and Nanshao.

[6][7] The rest of south extension, include Zhufangbei and Jimen Qiao stations (interchange to Line 12) opened on December 15, 2024.

In September 2010, construction of Phase I was completed, and was followed by a three-month test run.

[15] It connects the central Changping District with the Beijing subway network.

One original alternative plan set Phase II at 16.7 km (10.4 mi), with one extra station beyond the Ming Tombs.

[25] On January 5, 2009, the Changping District government signed land clearing contracts with townships along routes through Huilongguan, Shahe, and Nanshao, marking the official beginning of Phase I construction.

[32] On July 25, 2024, an out-of-service SFM93 train (set CP064) partially derailed on the siding of Qinghe railway station.