The station building is located on the north side and is a traditional Japanese style wooden structure which houses a staffed ticket window and a waiting room.

Access to the platforms and between the station building and the visitor centre is by means of a level crossing.

By 1928, the track had been extended further eastward and had linked up with the Inukai Line (犬飼線) which had been built westward from Ōita.

With the privatization of Japanese National Railways (JNR), the successor of JGR, on 1 April 1987, the station came under the control of JR Kyushu.

[6][7] The track from Higo-Ōzu to Aso was heavily damaged in the 2016 Kumamoto earthquakes and as a result, service between the two stations was suspended.