the mosque is built of stone and brick, with a tiled roof on a wooden frame. The exterior architectural décor is designed in brick, with a few marble slabs. The interior décor is made of ceramic tiles, carved wood paintings, and carved plaster.

The Great Mosque of Nédroma is similar in form to that of the Great Mosque of Damascus in more modest proportions, but it belongs to the family of Andalusian type mosques like the great mosque of Cordoba characterized by the bays perpendicular to the qibla. Rectangular in shape, the building is accessed through entrances located in the corners of the north wall, opening onto naves perpendicular to the qibla wall, which extend on either side of the quadrangular courtyard, forming triple side porticoes. The courtyard, located in the axis of the mihrab, opens onto the prayer hall with nine naves comprising three bays. The horseshoe bows are supported by pillars. The space before the mihrab is covered by an arch of cloister; there is every reason to believe that this square was never covered by a dome. The mihrab consists of a polygon niche, as in many medieval mosques in western Algeria influenced by the Great Mosque of Córdoba.

The mosque was built using the same construction method as other religious structures constructed during the Almoravid dynasty. The design features a nave parallel to the wall facing the qibla and a rectangular sahn in the centre that is flanked by walls. Nine naves are evenly spaced out to the south of the centre nave in the prayer hall. A gallery is formed by the connection of three naves to the short side of the sahn. The gallery completely encloses the longest side of the sahn, which is parallel to the qibla wall.

From the top, the structure has a rectangular shape and is covered with a roof made of parallel tile slopes.

The cross vault above the mihrab is where the central roof, which is a little wider, ends. The pillars that separate the naves support the horseshoe-shaped arch. There are no ornamentation on the mihrab. The scripture that is available inside the prayer hall states that the minaret was later added in 1348 and that it was not initially present.

On the minbar made especially for the mosque and on the portion of marble used for the minaret, the construction date is recorded.