An induction heating device, comprising: a first series connection body being connected to a power source and including a first semiconductor switch, a second semiconductor switch, and a third semiconductor switch being connected in series; a second series connection body being connected in parallel to the first semiconductor switch and including a first resonance capacitor and a first heating coil magnetically coupled to a load (14a, 14b, 25A, 25B) and being connected in series; a third series connection body being connected in parallel to the third semiconductor switch and including a second resonance capacitor and a second heating coil magnetically coupled to a load (14a, 14b, 25A, 25B) and being connected in series; and a control part controlling the first semiconductor switch, the second semiconductor switch, and the third semiconductor switch, wherein the control part selectively drives the following modes depending on a load (14a, 14b, 25A, 25B): a first single heating mode in which the second semiconductor switch and the third semiconductor switch are alternately made conductive while the first semiconductor switch is made always conductive so as to supply a high-frequency power to the second heating coil, a second single heating mode in which the first semiconductor switch and the second semiconductor switch are alternately made conductive while the third semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil, characterized in that the control part further selectively drives the following mode: a simultaneous heating mode in which the first semiconductor switch and the third semiconductor switch are alternately made conductive while the second semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil and the second heating coil at the same time. a first series connection body being connected to a power source and including a first semiconductor switch, a second semiconductor switch, and a third semiconductor switch being connected in series; a second series connection body being connected in parallel to the first semiconductor switch and including a first resonance capacitor and a first heating coil magnetically coupled to a load (14a, 14b, 25A, 25B) and being connected in series; a third series connection body being connected in parallel to the third semiconductor switch and including a second resonance capacitor and a second heating coil magnetically coupled to a load (14a, 14b, 25A, 25B) and being connected in series; and a control part controlling the first semiconductor switch, the second semiconductor switch, and the third semiconductor switch, wherein the control part selectively drives the following modes depending on a load (14a, 14b, 25A, 25B): a first single heating mode in which the second semiconductor switch and the third semiconductor switch are alternately made conductive while the first semiconductor switch is made always conductive so as to supply a high-frequency power to the second heating coil, a second single heating mode in which the first semiconductor switch and the second semiconductor switch are alternately made conductive while the third semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil, characterized in that the control part further selectively drives the following mode: a simultaneous heating mode in which the first semiconductor switch and the third semiconductor switch are alternately made conductive while the second semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil and the second heating coil at the same time. a first single heating mode in which the second semiconductor switch and the third semiconductor switch are alternately made conductive while the first semiconductor switch is made always conductive so as to supply a high-frequency power to the second heating coil, a second single heating mode in which the first semiconductor switch and the second semiconductor switch are alternately made conductive while the third semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil, characterized in that the control part further selectively drives the following mode: a simultaneous heating mode in which the first semiconductor switch and the third semiconductor switch are alternately made conductive while the second semiconductor switch is made always conductive so as to supply a high-frequency power to the first heating coil and the second heating coil at the same time.