Safety electric blanket

The utility model provides a safety electric blanket which comprises a step down transformer, a protective tube, a dual temperature and dual controlling switch which is provided with a light emitting diode indicating lamp, and heating resistance wires which are arranged in parallel, wherein the primary part of the step down transformer is connected with urban electric networks and the secondary part thereof is connected with the protective tube and the dual temperature and dual controlling switch which is provided with the light emitting diode indicating lamp. Furthermore, output contacts of the dual temperature and dual controlling switch are respectively connected with at least three resistance heating wires which are mutually arranged in parallel and the light emitting diode indicating lamp is connected with a voltage division current limiting resistor in series. Because the utility model is provided with a safety voltage below 36 volts as a working voltage, damage to a person caused by an electric shock can be avoided; moreover, since an electric heating wire is divided into a few segments and then are arranged in parallel for use, even if one or two segments are broken, the electric blanket can still work. In addition, since the safety electric blanket is provided with the safe working voltage below 36 volts, even if a certain electric heating wire is broken, the voltage of a broken part is very low so that kindled electric sparks are very weak and the possibility of igniting a piece of cloth can be reduced.