It is operated by the third-sector Tosa Kuroshio Railway with the station number "GN29".

[4][5] The station consists of two opposed side platforms serving two elevated tracks.

Near the station entrance, another timber-built waiting room has been set up, together with a bike shed and parking lots for cars.

[2][3][6] Each station on the Asa Line features a cartoon mascot character designed by Takashi Yanase, a local cartoonist from Kōchi Prefecture.

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