A developer collection container includes a connecting part removably connected to a discharge structure by moving relative to the discharge structure, the connecting part having a receiving opening to receive developer discharged from a discharge opening of the discharge structure, a storage part for storing the discharged developer, an opening and closing member provided in an area of the connecting part where the receiving opening is provided, the opening and closing member moving parallel to the area in conjunction with relative movement of the connecting part for displacement between close and open positions to close and open the receiving opening and having a covering part, and a sealing member provided around the receiving opening in the area, the sealing member sealing a gap formed between the covering part and the area and sealing at least a gap formed between the surrounding part of the discharge opening and the area.