A strip steel processing method for replacement of the furnace nose of a continuous annealing furnace belongs to the technical fields of galvanizing production technologies and methods, and is used for strip steel processing for the replacement of the furnace nose of the continuous annealing furnace. The method comprises the following steps: strip steel positioned in a cooling tower and a middle loop technologic section is driven to move forwards and backwards to make a segment of superfluous strip steel finally reserved in a ground area between a zinc pot and the cooling tower; the strip steel reserved on the ground between the zinc pot and the cooling tower is broken by gas cutting behind the furnace nose; the original furnace nose is hoisted to move out from the head of the broken stripsteel; a furnace nose to be used penetrates from the head of the broken strip steel, and moves in place; the furnace nose is in flange connection with a connecting and supporting device; and the broken strip steel is connected in a welding manner. The method breaks a routine technical scheme, solves the problems of adhesion of the strip steel head and the furnace nose and easily-occurring secondary steel heaping accident, which cannot be thoroughly solved for a long term, greatly shortens the replacement time of the furnace nose, and improves the replacement working efficiency of the furnacenose.