In order to solve the migration problem of the components in solid rocket motor, the research progress of migration experiment and molecular simulation are analyzed. Taking plasticizer as an example, explore the migration principle. Explain the hypothesis on component migration of propellant and describe the main influence factors in more detail. Compare and analyze the advantage and disadvantage of immersion method and joint debugging method, describe the test and computer simulation research situation of solid propellant migration. The analysis results show that molecular simulation can predict the properties of anti-migration materials for providing microcosmic explanation and basis for experiments.