Abstract: The rolling bearings are of key component of spacecraft rotation products. One of the important ways to evaluate the lifetime and reliability of the rolling bearings is the accelerated life test. In this paper, two engineering methods for the accelerated life test of the aerospace rolling bearings are presented, along with the principles for selecting the accelerated stress, the acceleration model, the sample size, the test duration, as well as the identification of the model parameters. In addition, with a special aerospace product as the object, examples of the calculation process by means of the two methods are presented. By a comparison, it can be seen that the confirmatory test (Scheme I) enjoys low cost and easy operation, but it can only provide qualitative results, while the diagnostic test (Scheme II) can provide quantitative results such as the life and the reliability, but it requires a larger sample size, a longer test time, a higher test cost, and a more complicated calculation process for the parameter estimation.