[3][4] The station, which is unstaffed, consists of two opposed side platforms serving two tracks.

A wooden building adjacent to one platform serves as a waiting room for passengers.

[1][5] The station opened on 18 October 1914 as Miyanoshita Station (宮野下駅, Miyanoshita-eki), a through-station on the narrow-gauge line from Uwajima to Chikanaga owned by the Uwajima Railway (宇和島鉄道).

Subsequently, with the privatization of JNR on 1 April 1987, control passed to JR Shikoku.

[4][6] Media related to Iyo-Miyanoshita Station at Wikimedia Commons