Dual-layer main and sub-coil electrothermal pad of toilet

The utility model discloses a double-layer electric heating lining with a main coil and an auxiliary coil for toilets, which comprises a temperature control element, a connecting wire, a plug, a main wire winding insulating board which is wound with a high power resistance wire, and an auxiliary winding insulating board which is wound with a small power resistance wire. The utility model is characterized in that the auxiliary winding insulating board is arranged on the upper part of the main wire winding insulating board; the main wire winding insulating board is separated from the auxiliary winding insulating board by an insulating board; the main wire winding insulating board and the auxiliary winding insulating board corresponds to the insulating board respectively; the main wire winding insulating board and the auxiliary winding insulating board are covered into one body by the two insulating boards; coil lead-out wires on the two insulating boards of the main wire winding insulating board and the auxiliary winding insulating board are connected in parallel with the connecting wire to control the temperature control element of the main coil to be fixed to the main wire winding insulating board at the point of the coil lead-out wires.