The utility model discloses a concrete coffin which is composed of a concrete coffin body, a concrete coffin bottom and a concrete coffin cover, wherein the concrete coffin body is fixed on the concrete coffin bottom, or the concrete coffin bottom is integrated with the concrete coffin body; the concrete coffin cover is arranged on the concrete coffin body; reinforced steel bars penetrate through the inner parts of the concrete coffin bottom, the concrete coffin body and the concrete coffin cover; the inner parts of the concrete coffin bottom, the concrete coffin body and the concrete coffin cover are provided with a plurality of through holes, the exposed junctions of the through holes are used for blockage; the outer surface of the concrete coffin is orderly coated with one layer of lacquer putty and rosewood-color paint, or the outer surface of the concrete coffin is only coated with one layer of rosewood-color paint. The external appearance of the concrete coffin is the same as that of a traditional wooden coffin, and the intensity is higher than that of the traditional wooden coffin. The concrete coffin accords with traditional Chinese funeral ideas, and the bereaved family and the deceased can accept the concrete coffin. The concrete coffin can be made without wood so that a large mount of wood can not be cut down. Thus, the ecological environment can not be damaged so as to be favorable for environmental protection.