A battery wiring module that can improve workability when covers are to be opened. A cover includes a cover body portion coupled to a housing so as to be pivotable between a closed position and an open position, and a cover lock portion locked to a housing lock portion when the cover body portion is at the closed position. The housing lock portion includes an elastic piece located so as to face an outer surface of a fourth wall portion of the wiring housing portion, and is elastically deformable in a direction away from and a direction toward the fourth wall portion, and a lock protrusion that protrudes from the elastic piece in the direction toward the fourth wall portion. The cover lock portion is locked to the lock protrusion in the state of being inserted between the fourth wall portion and the elastic piece.