The line was originally scheduled to open by the end of 2020. However, on 24 December 2020, Shanghai Metro officials announced that the opening would take place in 2021, prior to the start of the
Chinese New Year. Line 15 opened on January 23, 2021. station opened on June 27, 2021. On January 19, 2021, there was a partial collapse in an under-construction Exit 9 of
Zizhu Hi-tech Park station. There were no casualties at the scene, no impact on the surrounding environment, and no impact on the opening of Line 15. On May 20, 2021, according to the official announcement, due to the accumulation of water between and , Line 15 will operate at a speed limit, which is expected to be delayed for more than 25 minutes.
Controversy On 28 December 2011, the northern terminus of the line was shifted from station to an independent station called , located near
Line 7 between Qihua and but with no direct interchange to
Line 7. This has stirred controversy among residents over Line 15's already lack of convenient connections with other major subway lines such as
Line 2 and
Line 10. Planners reconsidered and extended Line 15 north of Jinqiu Road to connect with
Line 7 at . In December 2019, the line was further revised to provide an interchange with
Line 2 at station. However, there is still no interchange planned with
Line 10, as the Line 15 station is located mid-way between and stations on
Line 10. == Stations ==