An induction heating device for a metal strip includes a first induction coil member and a second induction coil member provided in parallel with a metal strip across the metal strip that travels in a longitudinal direction, provided to protrude from the metal strip, and provided so as not to overlap each other in the traveling direction of the metal strip, and a magnetic core member provided between the first induction coil member and the second induction coil member, and provided to cover a large area of an end portion in the sheet width direction of the metal strip on the side of each of the first induction coil member and the second induction coil member, and cover a small area of the end at a center portion between the first induction coil member and the second induction coil member.