[4] The station consists of an island platform serving two tracks at grade.

The station structure is no more than a roof for steps down to an underpass leading to the island platform.

[3][2][5] On 2 October 1972, Japanese National Railways (JNR) opened a new, shorter, inland route for the Nagasaki Main Line between Kikitsu and Urakami, thus bypassing the longer coastal route via Nagayo.

Ichinuno was opened on the same day as one of the intermediate stations along this new route.

With the privatization of JNR on 1 April 1987, control of the station passed to JR Kyushu.