To provide the developer container capable of making a shielding performance of an opening and the shifting feasibility of a shielding member compatible, standing for the developer container provided with the opening shield member made possible to shift between a position covering the opening and the position releasing the same.

This developer container 611 Y is provided with the opening 630 for discharging the developer contained inside. The shielding member 640 for shielding the opening 630 is mounted while allowed to shift between the position covering the opening 630 and releasing the opening 630. The shielding member guide part 632 for shifting guided members 645 and 646 of the shielding member 640 is composed so as to push the shielding member 640 to the opening peripheral portion 633 of the container main body side on the covering position, and during the time of shifting from the covering position to the opening position, the contact pressure between the guided members 645 and 646, and the shielding member 640 becomes smaller than the contact pressure between the guided members 645 and 646, and the shielding member 640 on the covering position.