Friction stir processing (FSP) for TA2 commercially pure titanium was performed. The microstructure characteristics of the stir zone, the thermo-mechanically affected zone and the heat affected zone were investigated. The hardness and wear properties of the base material and the friction stir procession specimen were analyzed contrastively. The results indicate that in the surface of TA2 commercially pure titanium after FSP, the grains of the stir zone undergo plastic deformation, blending and breaking to realize the densification and homogenization of the microstructure. The microhardness of the stir zone is increased by 37.5% compared with that of the base material. When the abrasive wear cycle is 1000, 1500 and 2000 r, the abrasion loss of the stir zone is smaller than that of the base material by about 31.4%, 36.6% and 46.4%, respectively. The microhardness and wear properties of the TA2 commercially pure titanium are greatly improved