The section under Guang'anmen, Luomashi, Zhushikou and Guangqumen Streets and the "handle" branch to Fengtai became Line 7.

The rest of the loop with a new south eastern extension to what was at the time the Beijing Jiaohuachang (Coking Plant) complex became Line 6.

Fatou's population projections were upgraded from 100,000 to 220,000 people and be a significant employment hub in the future.

Planners decided that 6 cars trains would have insufficient capacity for the new demand projections.

[4] In 8 July 2022, an EIA document regarding Phase III construction of Beijing rail transport system (2022–2027) announced the Phase III of Line 7, from Beijing West Railway station to Wanshousi, it will be a 6.4 km long section with 4 new stations.

[23] It started test runs in September 2014 with full operation beginning on December 28, 2014.