A collapsible storage box structure includes a soft cloth box body and bottom plate, the opening of the box body provided with a frame, and two sides of the box body are respectively covered with a hard side plate; the bottom plate is made of hard material covered with soft cloth, a center of a bottom face of the soft cloth is in connection with a bottom of the box body in a straight line shape, upon use, the bottom plate is pressed downward to hold the storage box open, and while not in use, the bottom plate is pulled upward to allow the two side plates to be folded in a central portion of the storage box, and the two side plates and bottom plate are then folded and stacked together to form a flat body, thereby facilitating carrying and collecting.