A flat wire stator, comprising an iron core and a flat wire winding, wherein the iron core has a plurality of iron core slots; the flat wire winding comprises a first phase winding, the first phase winding comprises a plurality of coils, the plurality of coils are distributed in rotational symmetry around an axis of the iron core, the coils are wound in some iron core slots of the plurality of iron core slots, first ends and second ends of the coils are located at the same end of the iron core, the first ends are located on sides of the iron core slots close to the axis in the radial direction of the iron core, and the second ends are located on sides of the iron core slots away from the axis in the radial direction of the iron core; and the plurality of coils are connected in series in sequence, the first end of a coil is connected to the first end of one coil of two coils adjacent to the coil, and the second end of the coil is connected to the second end of the other coil of the two coils adjacent to the coil; characterized in that, the coils comprise a plurality of branches; the plurality of branches in the same coil are arranged by offset of one iron core slot in sequence in a circumferential direction of the iron core; at the first end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of one coil of two coils adjacent to the coil through a plurality of first jumper wires; and at the second end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of the other coil of the two coils adjacent to the coil through a plurality of second jumper wires. the iron core has a plurality of iron core slots; the flat wire winding comprises a first phase winding, the first phase winding comprises a plurality of coils, the plurality of coils are distributed in rotational symmetry around an axis of the iron core, the coils are wound in some iron core slots of the plurality of iron core slots, first ends and second ends of the coils are located at the same end of the iron core, the first ends are located on sides of the iron core slots close to the axis in the radial direction of the iron core, and the second ends are located on sides of the iron core slots away from the axis in the radial direction of the iron core; and the plurality of coils are connected in series in sequence, the first end of a coil is connected to the first end of one coil of two coils adjacent to the coil, and the second end of the coil is connected to the second end of the other coil of the two coils adjacent to the coil; characterized in that, the coils comprise a plurality of branches; the plurality of branches in the same coil are arranged by offset of one iron core slot in sequence in a circumferential direction of the iron core; at the first end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of one coil of two coils adjacent to the coil through a plurality of first jumper wires; and at the second end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of the other coil of the two coils adjacent to the coil through a plurality of second jumper wires.