A developer transporting device includes a transporting device body including a transporting portion in which developer is transported and which has an opening; a developer container that is detachably supported on the transporting device body and includes a containing portion for that contains the developer and has a connection hole connected to the opening, an opening-closing member that opens or closes the connection hole, and an opening-closing-member support unit that includes a guide portion that guides the opening-closing member; a movement restraining member supported on the transporting device body and restraining the opening-closing member from moving relative to the transporting device body when the developer container is attached to the transporting device body; and a releasing portion provided on the opening-closing-member support unit and releasing the opening-closing member when the opening-closing member is moved a position for closing the connection hole.