It is a new technology of re-building ceramic cup, which is characterized by setting up mold and casting cling to carbon brick. The casting ceramic cup and carbon bricks will be seamless connectivity, which makes the structure of furnace heart compactly and tightly. And there is no filling layer between traditional ceramic cup and carbon bricks, which cut down thermal resistance layer, guarantee the overall heat conducting efficiency, protect the safety of furnace liner and avoid the occurrence of potential risk.