Abstract: Based on Halpin-Tsai formula, direction factor was brought in for establishment of elastic modulus prediction model of fiber reinforced pneumatic wheel. By ANSYS simulation, rules of stress and strain of pneumatic wheel with different volume ratios of fiber were given. It is proved out that aramid fiber reinforced method can overcome defect of inner rubber deformation in contact process. By mixed refining method, pneumatic wheels reinforced by aramid fiber were achieved. Multi-dimension nets distribution of aramid fiber reinforced polymer (AFRP)were observed in micro-view. Elastic modulus prediction model was confirmed by traction experiments. After that, well-distributed aramid fiber pneumatic wheel machining experiments were carried out. The results show that aramid fiber reinforced method can improve surface roughness efficiently in pneumatic wheel machining process and decrease scratch damages of surface.