Abstract: Based on SiO₂-TiO₂-MgO-FeO slag system,a great deal of operative performance experiments for high cellulose covered electrode were carried out.The feature of metal transfer of the electrode was revealed.The results showed that operative performance in the vertical down welding can be improved through fine droplet,increasing chemical reactive heat in arc area,raising arc blow force.Using sodium water glass with super low mode,carbonization and press coating problems during manufacture can be solved.