Abstract: Advanced fighter needs to achieve embedded ejection of missile under large maneuvering flight, High overload centrifugal force and Coriolis effect has influences on launch dynamics, and harmful to the launch separation safety. research on launching safety of stealth aircraft was carried out that combines simulation and test. Based on finite element method and Lagrange multibody dynamic equation, launch dynamics theory model of embedded ejection of stealth aircraft was established, and launch dynamics was simulated. The influence of high overload centrifugal force and Coriolis force on the ejection separation parameter was analyzed. Simulation and test results show that high overload centrifugal force has positive influences on launch safety,but Coriolis force has negative influences on launch safety.