30vol%TiB2/Al composites were fabricated by squeeze casting technology, and its self-lubricating characteristics under low load and high speed were found. Therefore, the influence of load, sliding speed and friction pair on the friction behavior of the material was studied by means of friction tests in the paper. The results show that in dry sliding wear mode, at 0.8m/s sliding velocity, with the increase of the load, the average friction coefficient of TiB2/Al composite with GCr15 was basically unchanged, but the fluctuation amplitude of the instantaneous friction coefficient decreased, and the standard deviation of the friction coefficient decreased. While at 0.49N，the average friction coefficient did not change significantly with the increase of sliding velocity, fluctuating between 0.165-0.255.The friction coefficient dispersion of TiB2/Al composites under constant loading and variable velocity is higher than that under constant loading and variable velocity. When GCr15 is used as friction pair, the turbulent fluctuation of instantaneous friction coefficient is larger than that of composite itself. The average friction coefficient of composites was stable at about 0.08.When grinding with GCr15, the average friction coefficient was stable at about 0.18.