To provide a portable seal united with a case which is made compact and enables single operation ready for sealing at any time and any place.

The foldable type portable seal which integrally constitutes the seal 1 and the case A is equipped with a rectangular case part 3 with a foldable and openable lid part 2, wherein the seal 1 is integrally constituted on one face of the lid part 2, and a seal space 4 allowing the seal 1 to be conformed and stored therein is provided to the case part 3 and a red-seal ink space 5 is provided adjacent to the seal space 4. The case part 3 either for only the seal space 4 or for the seal space 4 with the red-seal ink filled with a specified amount of the red-seal ink 6 is foldably and openably united with the lid part 2, allowing the seal 1 provided to the lid part 2 to be conformed and stored in the seal space 4. Furthermore, both of the lid part 2 of the rectangular case part 3 and the case part 3 are provided with a connecting lock device. A hanging tool is provided to a part of the case A.