Fan and motor structure thereof

The utility model relates to a fan and a motor structure thereof. The motor structure comprises a stator, at least one connecting piece, a first circuit board and a second circuit board. The stator is provided with a lower end, an upper end and at least one penetrating hole, and the at least one penetrating hole is communicated with the lower end and the upper end. The connecting piece is arranged in the at least one penetrating hole of the stator in a penetrating mode. The first circuit board is arranged at the lower end of the stator and is electrically connected with one end of the at least one connecting piece. The second circuit board is arranged at the upper end of the stator and is electrically connected to the other end of the at least one connecting piece. Accordingly, the radiating efficiency of the motor can be improved, and the maintaining convenience of the motor is also improved.