HOLDING DEVICE

There is provided a holding device mounted in a mounting hole in a mount member to hold a predetermined member. A base member is mounted in the mounting hole. A bag hooking member is supported rotatably on the base member. The bag hooking member has a holding portion that takes, depending on its rotational positions, a protruding state and a stowed state and that holds the predetermined member in the protruding state. The base member has a frame portion surrounding the bag hooking member, a claw portion extending from one side of the frame portion to be locked on a rear side portion of the mount member, and an erect portion erected from the one side of the frame portion to be locked on the rear side portion in a position lying nearer to the mounting hole than a distal end of the claw portion.