Abstract: The present invention discloses an improved motor stator structure, which comprises: a plurality of silicon steel plates, two rotor bearing blocks, and a plurality of pins. In the present invention, the pins are forced to pass through the through-holes of the silicon steel plates and then inserted into the buried holes to make the end faces of the pins closely contact the motor rotor bearing blocks. Thereby, the silicon steel plates and the rotor bearing blocks are concentrically assembled together. As all the pins has an identical length and closely contact the rotor bearing blocks, the rotor bearing blocks are parallel to each other and vertical to the stacking direction of the silicon steel plates. Thus, the present invention is an easy-to-fabricate motor stator structure, which has a considerable precision and a lower fabrication cost.