A raising/lowering conveyance device for a container for conveying an article has container supports that can move toward or away from a container in the horizontal direction and up and down with respect to the container. The container supports have a plurality of container support pins that can advance/retreat in the horizontal direction from the container and that are forcibly held at a position protruding from a front surface of the container support. The container supports are configured to lift the container by the container support pins which protrude under a downward step surface formed on the outside of the container. A pin main body of the container support pins protrudes from the front surface and has a flat tip perpendicular to the center axis of the pin main body, and has a tapered shape that increases in diameter toward the flat tip and is thicker toward the end.