For it is difficult to estimate the life of the gear pump effectively in the design process,a method to conduct the accelerated life test of the gear pump was put forward, by increasing the degree of contamination of the fluid medium. The failure mode of the gear pump was analyzed, and the degree of contamination of the medium was selected as the accelerated stress. The accelerated life test method for abrasion of gear pump was given. The accelerated life model was established, and a gear pump life and reliability indexes calculation was given with the statistical analysis method based on the experimental data. The results show that the method is feasible, it can effectively shorten the test period, and reduce the test cost, it provides a reference for the life estimation of gear pump.