The utility model relates to a pottery the compound wind gap endotheca of metal for install in the blast -furnace tuyere, wind gap endotheca (2) outside is the toper, wind gap endotheca (2) are formedby at least two monomer combination concatenations, and are gapped between the adjacent individual. The wind gap endotheca is formed by two at least monomers concatenation, and concatenation easy islike this installed, realizes more easily for integral erection's mode that the installation accuracy is higher to can not lose the ceramic layer. It is gapped between two adjacent monomers, when thewind gap endotheca meets the shock heating environment of shock chilling, there are sufficient space telescopic or inflation between the polylith tile form monomer, release internal stress that can beabundant avoids the ceramic layer to break to reach further increase of service life.