The invention provides a coil panel which comprises a coil panel support (4) and a coil (5), wherein the coil panel support (4) is provided with a first surface and a second surface which are arranged in a back-to-back mode, and the coil (5) is wound around the first surface and the second surface of the coil panel support (4). The invention further provides an assembling method of the coil panel, the coil panel support and an electromagnetic range. Due to the fact that the coil is wound around the two surfaces of the coil panel support, the length of the coil is doubled in the same area, and correspondingly, the thermal efficiency of the coil panel and the thermal efficiency of the electromagnetic range provided with the coil panel can be improved substantially. Besides, due to the fact that the coil portion on the upper surface and the coil portion on the lower surface are separated by the coil panel support, not only can thermal interference between the coil portion on the upper surface and the coil portion on the lower surface be avoided, but also electric interference between the coil portion on the upper surface and the coil portion on the lower surface can be avoided.