The invention discloses a stator wire protection structure rectifier including an end cap negative plate, a bus bridge support, a negative rectifier diode, an assembling screw rod, a conductive positive plate, a positive rectifier diode, a positive output screw rod, an end cover stator wire via hole, a stator wire welding slot, an intermediate backing and insulating bracket and a stator wire threading pipe, the bus bridge support is connected with the stator wire bus, and the assembling screw rod fixes the intermediate backing and insulating bracket, the conductive positive plate, and the bus bridge support to the end cap negative plate. The stator wire protection structure rectifier is characterized in that the intermediate backing and insulating bracket insulates the end cap negative plate and the conductive positive plate, the stator wire threading pipe is assembled in the end cover stator wire via hole of the end cap negative plate, the stator wire threading pipe is arranged on the intermediate backing and insulating bracket, and the stator wire is welded to the stator wire welding slot via the horn-shaped threading hole. The stator wire protection structure rectifier is advantageous in that the number of rectifier parts is reduced, the assembly efficiency and yield of the rectifier can be improved, and the assembling yield of a client's generator and the overall reliability of the generator are improved.