A lid attached storage device includes: a box body having an opening; left and right lid bodies configured to cover left and right sides of the opening; and left and right opening and closing mechanisms configured to respectively cause the left and right lid bodies to be slidable in the front and rear direction and rotatable in the up and down direction with respect to the box body, each of the left and right opening and closing mechanisms including: a base member; a rotational support portion configured to support the base member so as to be rotatable in the up and down direction about a left or right side of the box body with respect to the box body; and a slide portion configured to slide the lid body in the front and rear direction with respect to the base member.