Abstract: The present invention is related to a bag structure. The bag structure comprises a front panel, two lateral panels, a bottom panel, and a rear panel, and all panels join together to form the bag. Two lateral edges of the bottom panel have an extension flap for joining to the lateral panel, respectively, and a valley fold portion is between the bottom panel and the extension flap. After the bag structure is folded, the bag structure has a one-piece bottom and the flat front and rear panels, thereby having attractive appearance and strong structure and being flat when stacked.

Abstract: A packing box includes a first triangular lateral board part, an upper board part, a bottom board part, a covering board part, and a second triangular lateral board part, which includes upper and lower parts; when the packing box is in a spread-out position, it has a first sticking plate lying between the first triangular lateral board part and the bottom board part; the first sticking plate joins the first triangular lateral board part and the bottom board part together, and therefore can prevent the covering board part from being folded along a middle portion when one is folding and erecting the packing box; therefore, folds won't be formed on the covering board part to spoil the appearance.