An electric cleaning appliance, the electric cleaning appliance comprises a handle housing and a driver apparatus placed inside the handle housing, the driver apparatus comprises a transducer assembly and a drive coil assembly, the transducer assembly comprises a transducer, a transducer rack and a transducer assembly fixing part, the drive coil assembly comprises a drive coil, a drive coil rack and a drive coil assembly fixing part, the transducer comprises a transducer drive shaft inserted into a cleaning assembly, at least one transducer elastic member, at least one transducer elastic member fixing member for fastening the transducer elastic member and at least two permanent magnets (18, 19), the polarities of the magnetic poles of the permanent magnets (18, 19) in a direction toward the drive coil are opposite, the permanent magnets (18, 19) are movable either relative to the transducer elastic member fixing member or relative to the drive coil, and when an alternating current with a frequency of f 0 passes through the drive coil, an electromagnetic force generated between the permanent magnets (18, 19) and the drive coil drives the transducer to resonate, wherein the transducer rack comprises a transducer left frame and a transducer right frame which are disposed separately from each other, the drive coil rack comprises a drive coil left frame and a drive coil right frame which are disposed separately from each other, the transducer rack and the drive coil rack are disposed apart along a direction of a longitudinal axis (L 1) of the transducer drive shaft, the transducer is fixedly connected with the transducer left frame and the transducer right frame, the drive coil is fixedly connected with the drive coil left frame and the drive coil right frame, on the drive coil left frame and the drive coil right frame are respectively arranged a drive coil left frame hollow area and a drive coil right frame hollow area, the drive coil left frame hollow area and the drive coil right frame hollow area allow a moving component in the transducer to rotate back and forth without interference around the longitudinal axis (L 1) of the transducer drive shaft or a straight line approximately parallel to the longitudinal axis (L 1) of the transducer drive shaft in the drive coil assembly; wherein the handle housing is fastened with the transducer assembly via a first structural feature part in a way that one is not movable relative to the other, the handle housing is fastened with the drive coil assembly via a second structural feature part in a way that one is not movable relative to the other; and wherein the electric cleaning appliance also comprises a third structural feature part, the third structural feature part comprises at least one mating surface (45, 46, 55, 56) which is respectively arranged close to the top of the brush head along the longitudinal axis (L 1) of the transducer drive shaft on the left and right frames (5, 4) of the drive coil, and mating surfaces (25, 26, 35, 36) mating with the mating surface (45, 46, 55, 56) and disposed on the left and right frames (2, 3) of the transducer, by the aid of actions of both torques from the drive coil torque (M 5) and from the elastic member fixing member torque (M 4) in the opposite direction applied on the handle housing, the transducer assembly and the drive coil assembly may be in contact facing each other or be separated facing each other via the third structural feature part.