Noise reduction structure and noise reduction earphone

The noise reduction structure comprises a battery, an FPC board and a loudspeaker, the battery comprises a battery cell, the battery cell comprises a positive pole piece and a negative pole piece, the periphery of the battery cell is provided with a pole piece winding section, the pole piece winding section is a negative pole piece section which is not laminated and wound with the positive pole piece, and the loudspeaker is arranged in the battery cell. Or the pole piece winding section is a positive pole piece which is not laminated and wound with the negative pole piece; the FPC board comprises a bottom plate, a noise reduction coil is arranged in the bottom plate, the bottom plate is arranged between the battery and the loudspeaker, the length of the noise reduction coil is the same as that of the winding section of the pole piece, and the current direction in the noise reduction coil is opposite to that of the winding section of the pole piece. The noise reduction structure provided by the utility model s