Line 4 of Xiamen Metro is an under construction metro line in Xiamen, Fujian, China. The Xiang'an Airport section is scheduled to operate in June 2026. As the fastest fully automated metro train currently operating in Xiamen, travel time from Xiamen North railway station to Xiang'an Airport will be reduced to 30 minutes.
This is the first subway line of Xiamen Metro system to adopt GoA4 automation level.
Among the distance of on the Phase 1; is an underground section, and is a transition section.
History The key engineering projects for Line 4 were announced in December 2015.
Construction began in December 2015 with an estimated total construction period of 57 months.
On the morning of 11 April 2020, the bridge elevated section from Caicuo to Dadeng North was completed.
On 16 April 2024, the main structure of Airport West Station of Line 3 and Line 4 were successfully topped out.
In August 2024, the rolling stock set of Line 4 officially debuted.
On 26 November 2024, Line 4 rolling stock began testing without passengers.
On 10 October 2025, Line 4 began trial operation.
From 9:30 am on 16 September 2026, Line 4 will open trial ride activity for the public along with Line 6.
Stations Service route: Runs from to , without stops at . Operating hours daily from 8:00 to 20:00, with trains run on schedule within 14 minutes and 45 seconds minute intervals, throughout the day. Section Station name Transfer Distance Location ?HaicangPhase 2JimeiPhase 1 (Xiang'an Airport section) Xiamen BRTXiamen BRTTong'anXiang'anDongting XMN XMNPhase 1 long term planningAirport East XMN
Rolling stock In the first phase, 18 four-car train set produced by CRRC Changchun adopting GoA4 automation level will be implemented to meet the demands.
Future expansions Phase 2 of Line 4 has been approved, with a total investment of 10.1 billion RMB. Phase 2 consists of 5 stations, spanning long. It is expected to be completed in October 2028.
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