Modern fighter aircrafts need to complete high maneuverability flight tasks at high Angle of attack, which leads to increased pilot control burden, and may cause the aircraft to enter dangerous states such as stall, deviation and even spin due to mis-operation. In order to take into account both flight safety and flight performance of high maneuverability at high Angle of attack, this paper establishes the corresponding relationship between dangerous action and dangerous state, proposes the prediction method of dangerous action and the early-warning/isolation criterion, and designs a switching model to realize the switching of basic control law and isolation control law. Based on the idea of obstacle avoidance, the real-time generation technology of aircraft safety trajectory is established, and the nonlinear dynamic inverse control law is adopted to track aircraft safety trajectory to ensure that flight parameters are kept within the safety limit boundary, and the isolation technology of pilots’ high maneuvering dangerous actions is formed. The Immelmann turn is selected to carry out the verification research on the isolation technology of pilots’ high maneuvering dangerous actions at high Angle of attack. The simulation results show that the aircraft state does not exceed the safety boundary of Angle of attack and overload, and the Immelmann turn is normally completed, realizing the automatic isolation and no-worry control of pilots’ dangerous actions.