To provide a hinge structure of a coffin, which can not generate combustion residue, has good outer appearance, and can ensure enough durability.

In the coffin, basal body parts 13B such as a lower box or a window frame and movable parts 13A such as a cover or a window door arranged adjacently to the basal body parts 13B are connected in open and closed manners by a hinge H. Cloth is stuck to the backing material of the coffin containing the basal body parts 13B and the movable parts 13A. The hinge H is formed in following manners: two pieces of cloth T and T are superposed and are sewn on a straight line according to the length of the hinge axle; then adjacent two pieces of cloth in four pieces of cloth Ta, Ta, Tb and Tb branched from the sewing part are stuck to the surface of the basal body part, and the remaining two pieces of cloth are stuck to the surface of the movable part.