Abstract: A packing container H has a lid HC that can be opened and closed. The lid HC forms part of a double panel, which includes a front panel 1 and an inside panel 4. The front panel 1 can turn on one edge of the double panel. The inside panel 4 includes a top part 4A surrounded by perforations 17. The top part 4A can be stuck on the front panel 1 and subsequently torn from the inside panel 4 so that an opening 20 is formed in the inside panel 4. The lid HC includes the front panel 1 and the top part 4A stuck on this panel. The front panel 1 has a pair of guide flaps 5 formed on both sides thereof. The guide flaps 5 are adjacent to the one edge of the double panel. The guide flaps 5 can guide the lid HC when the lid is opened. The front panel 1 also has an insert tab 11 formed at the edge thereof opposite the one edge. The insert tab 11 can lock the lid HC when the lid is closed.