It has a single nave and two bodies attached to both sides, penetrating them through two semi-circular arches with Renaissance moldings; one serves as a sacristy with a lintel covering while the other, apparently an old baptistery, is covered with a starry Gothic vault with diagonals and terceletes.

The entire nave is covered with three simple starry Gothic vaults with their terceletes, the one of the presbytery standing out for its greater wealth of composition, since if they all have their diagonals, terceletes and ligatures, here there are straight warps; the ribs fall on some semi-circular arches that are continued by high half columns attached to the walls that end in basements with Gothic moldings; at the head they do so in a kind of corbel as in the feet, where an imitation Gothic window opens in the thickness of the wall, similar to the one that exists on the right side next to the presbytery.

On both sides of the nave there are two chapels, all four covered with Gothic vaults with their terceletes and diagonals resting on corbels; the second from the left serves as the entrance to the temple and is where the gate that leads to the Plateresque portal on the north side of the Plaza de la Rueda is located. The current location of the cover is different from the original, which was located two chapels to the left.

The bank is heavily modified as well as the front panels of the central street entrecalle and side streets, which house modern saints and improper decorations (note that the church was looted and partly burned during the first days of the Civil War). From the end of the 16th century, it is composed on its first floor by columns with Ionic capitals, the second by columns of Corinthian capitals, ending the side streets with triangular pediments with classical entablature. In the attic a modern Christ replaces what should have been a Calvary; In it and at the feet of Christ we have the following inscription that informs us of its builders, materials and the year.

Outwardly it has good proportions to which the bodies of the sacristy and the old baptistery and the chapels contribute. An eaves of Gothic drops (eaves of the nave) run through the entire temple. It has two buttresses that exercise the function of supporting the thrust of the vault of the main chapel.

On its side of the roof we have the only entrance portal to the parish, very mutilated by physical and human agents. It is one of the first examples of Plateresque in the province of Jaén connected with Plateresque in the Albacete area. It is composed of a semicircular arch whose voussoirs are decorated with Renaissance moldings and as a central motif in each one of them by cherubs. It is framed by some very worn pillars in which a niche is preserved. In the spandrels we have two splendid and very classic Renaissance medallions with human profile reliefs.