Floor heating wire

The utility model relates to a floor heating wire. The floor heating wire comprises two conductors (1) in parallel arrangement, the two conductors (1) are each externally provided with an insulation layer (2), and the two insulation layers (2) are arranged to be attached closely. The floor heating wire is characterized in that the two insulation layers (2) are externally plastically extruded by a circular inner sheath (3), the inner sheath (3) is externally provided with a shielding layer (5), and the shielding layer (5) is externally plastically extruded by an oversheath (6). The floor heating wire provided by the utility model has the advantages of thin overall wire diameter, good conductivity, fast heat transferring speed and high mechanical strength.