As of 1 April 2016[update], the railway operated a fleet of 108 electric multiple unit (EMU) vehicles, all based at Nakamozu Depot.

[4] The section from Nakamozu to Izumigaoka opened on 1 April 1971, with 1,067 mm (3 ft 6 in) double track and electrified at 600 V DC.

[7] The line was extended to Komyoike on 20 August 1977, and to Izumi-Chuo on 1 April 1995.

[7] Owing to ongoing financial constraints caused by the COVID-19 pandemic, Semboku Rapid Railway announced that it would be merged into Nankai Railway.

In addition, the Semboku Rapid Railway Line is scheduled to be renamed to the Semboku Line (泉北線, Senboku-sen).