A device for manufacturing metal clad strips continuously, comprising base material supplying equipment consisting of decoiler , pinch roll , shot blasting machine , welding equipment , welding pinch roll , induction heating apparatus , and guiding roll , wherein, base material strip (A) are transported by the base material supplying equipment through decoiler , pinch roll , shot blasting machine , welding equipment adapted to weld shot-blasted base material strips head-to-tail, welding pinch roll , induction heating apparatus and guiding roll to the mold where the base material and molten steel are merged; the base material strip enters the mold along the middle inside from above, and pass through the mold from below, wherein the two inner walls of the mold being sealed with side seal plates; two tundishes for casting molten steel is provided above the mold; the molten steel flows from tundish into the mold and contact with the two sides of the base material strip in the mold, so that a preliminary melt merging takes place; upon preliminary melt merging, the base material strip (A) forms a clad slab (B) which passes through the mold from below, and cooled at a secondary cooling section by cooling-spray located at the outlet of the lower part of the mold; a leveling roll is provided after the secondary cooling section, and a rolling mill is provided after the leveling roll for rolling the clad slabs into clad strips (C) into different size and specification; an on-line cooling equipment for the clad strips is provided after the rolling mill, a straightening machine is provided at the exit of the on-line cooling equipment; the straightened clad strip is then cut to fixed length by a dividing shear or is coiled by a coiler . base material strip (A) are transported by the base material supplying equipment through decoiler , pinch roll , shot blasting machine , welding equipment adapted to weld shot-blasted base material strips head-to-tail, welding pinch roll , induction heating apparatus and guiding roll to the mold where the base material and molten steel are merged; the base material strip enters the mold along the middle inside from above, and pass through the mold from below, wherein the two inner walls of the mold being sealed with side seal plates; two tundishes for casting molten steel is provided above the mold; the molten steel flows from tundish into the mold and contact with the two sides of the base material strip in the mold, so that a preliminary melt merging takes place; upon preliminary melt merging, the base material strip (A) forms a clad slab (B) which passes through the mold from below, and cooled at a secondary cooling section by cooling-spray located at the outlet of the lower part of the mold; a leveling roll is provided after the secondary cooling section, and a rolling mill is provided after the leveling roll for rolling the clad slabs into clad strips (C) into different size and specification; an on-line cooling equipment for the clad strips is provided after the rolling mill, a straightening machine is provided at the exit of the on-line cooling equipment; the straightened clad strip is then cut to fixed length by a dividing shear or is coiled by a coiler . <EOS>