Case of award certificate keeping various diploma, certificate of appointment, letter of appreciation is exhibited. The case has first plate body that have hole for inserting something accordingly which is connected to second plate body first plate body. The first plate body is connected to second plate body which has foldable side in order to overlap these sides. Keeping slanted backward, Second plate body can overlap first plate body. By doing so, the case can not be fallen to backward. To keeping this state, Some side of second plate body can be folded protudingly to support back side of this plate body.