The utility model provides a sediment backplate is taken off to smelting furnace, include the backplate main part, take off sediment window, bracket and bracket base, the backplate main part is designed as the fire door that covers the smelting furnace completely, it arranges to take off the sediment window in the backplate main part, allow slagging -off rod to pass and stretch into the smelting furnace, bracket base fixes in the backplate main part, lie in the lower border below of taking off the sediment window, the bracket is installed to bracket base, and for bracket base is rotatable, thebracket is used for supporting slagging -off rod. The utility model discloses a sediment backplate is taken off to smelting furnace can make operating personnel avoid high temperature and scorch andmake that to take off sediment operation more laborsaving.