Electric Junction Box Unit

An electric junction box unit includes an electric junction box, a bracket holding the electric junction box, and a holder assembled to the bracket. The bracket includes a plate-shaped back face portion facing the electric junction box, a plurality of holding portions which are erected from the back face portion along an assembly direction of the electric junction box and which hold the electric junction box, and an engaging recessed portion engaging with the holder in a state where the back face portion is sandwiched between the electric junction box and the holder. The engaging recessed portion includes a first recessed portion receiving a first engaging piece of the holder along a direction intersecting the assembly direction, and a second recessed portion receiving a second engaging piece of the holder along the assembly direction.