The Loop line of Chongqing Rail Transit is a rapid transit loop line in Chongqing, China.

The southern section with the Egongyan Rail Transit Bridge opened on December 30, 2019.

On January 8, 2019, a train accident occurred in the tunnel between Haixialu and Nanhu where a train (000141-000146) struck an unsecured and improperly opened civil defense blast door.

As a result, one person was killed and three people were injured.

[9] This set has been out of service ever since the incident and each car stored in CRRC Chongqing Changchun Vehicle separately.