A combined coffin is provided with a base, a lower cover plate, two long side plates, two short side plates and an upper cover plate. The lower cover plate is closed to the bottom of the base plate, the base plate is provided with a base plate, the two long side plates are respectively pivoted to the two sides of the base plate, the two short side plates are respectively positioned between the two long side plates, the upper cover plate is closed to the two long side plates and the two short side plates, and the long side plate and the short side plate are positioned on the lower cover plate The long side plate and the short side plate can be folded and stored on the base for convenient transportation and storage.一種組合式棺木，係設置有底座、下蓋板、二長側板、二短側板以及上蓋板，下蓋板係蓋合於底座底面，底座具有底板，二長側板分別樞接於底座二側，二短側板分別定位於二長側板之間，而上蓋板係蓋合於二長側板與二短側板上，且長側板與短側板定位於下蓋板上，而可快速的組裝成棺木，且長側板與短側板可以折疊方式收納於底座上，以方便運輸及儲存。
