Operated by West Japan Railway Company (JR-West) and Kintetsu Railway, it is one of the four oldest railway stations in Nara Prefecture, and forms a major junction in the region.

The nearby Shin-Ōji Station (新王寺駅, Shin-Ōji-eki) is also the terminus for Kintetsu Tawaramoto Line.

The JR West station has one side platform and two island platforms, serving five tracks at ground level.

The Kintetsu station consists of a bay platform serving two tracks at ground level.

The station consists of two bay platforms serving a single track at ground level.