To provide a coffin with advantages of being light, flammable, and leaving no foreign materials such as metal fittings after cremation that a conventional paper coffin has, which can be easily assembled to be strong and used for a variety of ceremonies.

The subject coffin made of compressed fiber panels 1 comprises a box-shaped coffin body 2 whose upper part is opened and a lid body 3 to be put on the opening. The coffin body 2 and the lid body 3 are made of the compressed fiber panels 20 having a plurality of hollow parts 12. The compressed fiber panels 20 are built by filling a synthetic resin P into a hollow part of the plurality of hollow parts 12, which is on a connecting part, and striking a wooden nail T into the hollow part 12 filled with the synthetic resin P.