The station consists of two opposed side platforms serving two tracks. There is no station building but weather shelters are provided on both platforms for waiting passengers. The station is unstaffed but a "Tickets Corner" is installed. Ramps lead up to each platform from the access road. There is no direct link between the platforms. A roadlevel crossing at the end of the ramps is used to cross from one platform to the other. A designated parking space for bicycles is provided near the station.
History
Yasoba Station opened on 27 January 1952 as an additional stop on the existing Yosan Line. At this time the station was operated by Japanese National Railways. With the privatization of JNR on 1 April 1987, control of the station passed to JR Shikoku.