The invention discloses a stator poly magnetic type magnetic flux switching transverse magnetic flux permanent magnet wind power generator comprising a stator mechanism, a rotor mechanism, a non-permeability magnetic material stator sleeve and a bearing. The stator mechanism comprises N double U-shaped stator iron cores, N permanent magnets which are embedded in U-shaped structures, and annular armature windings, wherein N is greater than or equal to two. Directions of magnetic poles of each phase of the adjacent permanent magnets are opposite to each other in a circumferential direction. Two groups of the armature windings, which are reversely connected in series, are respectively arranged in two U-shaped grooves. The rotor mechanism is composed of N rotor iron cores which are evenly distributed on the external side of a non-permeability magnetic material cylinder along the circumferential direction. Each phase of adjacent rotor iron cores are arranged in intervals in a horizontally staggering way along an axial direction. The permanent magnets are embedded in the U-shaped iron cores, and the magnetization directions the adjacent permanent magnets in the circumferential direction are opposite to each other. With combination of structural characteristics that the adjacent rotor iron cores are horizontally arranged in a symmetrical way, a function of magnetic flux switching can be realized so that ineffective working areas of the permanent magnets are avoided, utilization rate of the motor permanent magnets is enhanced and power density of a motor is enhanced.