 The and the are the aliases assigned by Willer Trains to the sections of the line.The Nishi-Maizuru - Miyazu section was opened in 1924 by the Japanese Government Railway, and extended west progressively, reaching Amino in 1926.The Toyooka - Kumihama section opened in 1929, the Amino - Tango-Kanno section in 1931, and the line was completed in 1932 with the opening of the Kumihama - Tango-Kanno section

Freight services ceased in 1985, and in 1990 the Kitakinki Tango Railway commenced operating the line.