This creation discloses a coffin which includes a bottom plate, two first side plates, a plurality of first connection components, a plurality of second connection components, and two second side plates. Each first connecting component is used to connect one of the first side plates to the bottom plate, and each second connecting component is used to connect the other first side plate to the bottom plate, and each first side plate can be connected to a plurality of first side plates. One connecting component or multiple second connecting components rotate in the direction of the bottom plate. The two second side plates are used to connect with the bottom plate and the two first side plates, and the bottom plate, the two first side plates and the two second side plates can be connected to each other to jointly form a containing groove. Through the design of multiple first connecting components and multiple second connecting components, it is possible to rotate the two first side plates toward the bottom plate during the transportation of the coffin, thereby greatly reducing the volume of the coffin during transportation.本創作揭露一種棺材,其包含底板、兩個第一側板、多個第一連接組件、多個第二連接組件及兩個第二側板。各第一連接組件用來使其中一個第一側板與底板相連接,各第二連接組件用來使另一個第一側板與底板相連接,而各個第一側板能通過其所連接的多個第一連接組件或多個第二連接組件向底板的方向旋轉。兩個第二側板用以與底板、兩個第一側板相連接,而底板、兩個第一側板及兩個第二側板能相互連接,以共同形成一容置槽。通過多個第一連接組件及多個第二連接組件的設計,將可以在棺材運送過程中,使兩個第一側板向底板方向旋轉,進而可大幅縮減棺材運輸時的體積。