A coffin includes a coffin main body, the coffin main body includes an upper frame, a lower frame, a wall and a first cover. The first cover includes a first outward cover and a first cover frame, which is located on the upper frame, and connected to the coffin main body. The wall includes two long walls, two short walls and a bottom wall. The two long walls and two short walls are connected and around to the upper frame and lower frame, the bottom wall is located on the lower frame, allowing the bottom wall, two long walls and two short walls to form a container. The first outward cover, two long walls and bottom wall are made of cardboard which is honeycomb cardboard, the first cover frame, the upper frame and the lower frame are made of wood.一種棺材包括一棺材主體，棺材主體包括一上固定框、一下固定框、一棺壁以及一第一棺蓋。第一棺蓋包括一第一外蓋以及一第一蓋框，其位於上固定框之上方，並與棺材主體樞接。棺壁包括兩長壁、兩短壁及一底壁。兩長壁及兩短壁連接上固定框及下固定框，且圍繞上固定框及下固定框，底壁設於下固定框之位置，使得底壁、兩長壁及兩短壁形成一容納空間。第一外蓋、兩長壁及底壁之材質為厚紙板，厚紙板是蜂窩紙板結構，第一蓋框、上固定框及下固定框是由木頭製成。
