The present invention discloses a hinged stator core composed of a plurality of core units. Each of the core units includes an inner tooth portion and an outer yoke portion, and two adjacent two coreunits are connected by a hinge structure. The hinge structure comprises a hinge and a hinge groove matched with the hinge, the hinge and the hinge groove are both arranged on the yoke portion of the core unit, the hinge and the hinge groove are arranged on the side in the clockwise rotation direction and / or on the side in the counter-clockwise rotation direction along the rotor shaft of the yokeportion of the core unit, the hinge is formed by a fitting section cooperating with the hinge groove and a connecting section for connecting the fitting section with the yoke portion, the shape of the radial cross-section of the fitting section along the rotor shaft is circular or flawed circle-shaped, the shape of the radial cross-section of the hinge groove along the rotor shaft is arc-shaped,the center of the circle of the fitting section of the hinge and the center of the circle of the hinge groove are both on the circle with the center of the stator core as the center of a circle. The hinged stator core has the advantages of convenient manufacturing and processing, more convenient winding and good magnetic circuit integrity.