The utility model relates to a long life structure which reduces the species of bricks, simplifies the masonry construction and ensures that the service life of a blast furnace well can reach to more than 8000 t iron / m <3>. The position which is close to a cooling wall uses small roasting carbon bricks or big roasting carbon blocks, and the position that liquid slag and iron contact still uses ceramic masonry. The roasting carbon bricks and the ceramic masonry adopt the lap joint clutching pulling masonry structure and eliminate the straight joint formed from top to bottom when the two former refractory products are in compound masonry. The slit of the bricks is from 1.0 to 1.5 mm in masonry and is cemented by the special daub. The new structure can further lengthen the service life of the ceramic masonry, and can fully display the functions of energy-saving and consumption descending of the ceramic masonry, and is in favor of the strengthening of blast furnaces.