The station building is a timber structure which used to house a ticket window but has become unstaffed and presently serves only as a waiting room.

[3][2] The private Kyushu Railway had opened a track from Tosu to Saga and Takeo (today Takeo-Onsen) by 5 May 1895.

In the next phase of expansion, the track was extended further west with Haiki opening as the new western terminus on 10 July 1897.

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

[8] Media related to Mimasaka Station at Wikimedia Commons This Saga Prefecture railroad station-related article is a stub.