Abstract: Particles of phase change modified polyamide composites were prepared by filling polymerization. Tribological tests under sliding velocities between 6 m/s and 24 m/s show that, polyamide composites had significantly lower friction coefficients and wear rates compared to pure polyamide, and the properties exhibited self-adaptability with the variation of sliding velocities to a certain degree. When the weight percentage of particle of phase change was low (5%), the composite had low level of self-adaptability. While its weight percentage was high (10%), the composite had strong self-adaptability. Wear mode of pure polyamide was severe adhesive wear, typical abrasive wear and slight adhesion appeared for 5% particle of phase change modified polyamide composite, and mild abrasive wear and slight fatigue wear coexisted for 10% particle of phase change modified polyamide composite.