Assembly method of steering system

The invention provides an assembly method of a steering system, the steering system comprises a first transmission part, the first transmission part is connected with a wheel, and the first transmission part comprises a wheel core; the wheel core is rotatably connected with the wheel-side stand column, a threaded part is arranged at one end, far away from the wheel-side stand column, of the wheel core, more than two positioning pins are arranged between the threaded part and the wheel-side stand column, and positioning holes matched with the positioning pins are formed in the wheel; one end, close to the threaded part, of the wheel core penetrates through the wheel and is in threaded connection with the locking nut; the positioning pin is inserted into the positioning hole; a step part is arranged at the end, away from the wheel edge stand column, of the threaded part, two insertion holes which are symmetrically formed in the axial direction of the wheel core are formed in the step part, an anti-dislocation d