[3] Besides local services, the Uzushio limited express between Okayama, Takamatsu and Tokushima also stops at the station.

A station building houses a waiting room and a JR ticket window (without a Midori no Madoguchi facility).

A passing loop runs on the far side of the island platform beyond track 3.

[2][3][5] Yashima Station was opened on 1 August 1925 as an intermediate stop when the track of the Kōtoku Line was extended eastwards to Shido.

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