A motor device includes a motor housing, a stator core having at least two poles fixedly installed in the stator housing symmetrically, a coil winding wound around the stator core, and an insulating coil holder for insulating the stator core from the coil winding, and the motor device further includes at least two pairs of magnetic steel structures cooperating with the stator core. All of the magnetic steel structures are fixedly connected to the periphery of the shaft coupling, and the shaft coupling is fixedly connected to the motor shaft. An electric toothbrush having the above motor device is further provided.
