This paper proposes a strategy of three-point collinear active defense in three-dimensional space. Firstly, taking the kinetic characteristics of fighter, defending missile, and offensive missile as a king, an induce capture aircraftdefending missile synergy active defense method is put forward in transforming the complex air war confront problem between fighter and defending missile and offensive missile into a simple trajectory problem of fighter. Secondly, in light of the implementation process of active defense strategy, a process performance index during the implementation process of active defense strategy is put forward and the different between process performance index and traditional performance index is analyzed. Lastly, pointing at the problem of the QPSO’s result in the whole process can`t be able to be evaluate. So the method of RHC (receding horizon control) is used to maintain process performance index as the optimization index of every receding optimization window, which rise its real-time. Simulation shows that the process performance index could be converging rapidly into desired values, the control commands’ values of fighter and two others were in a small amplitude oscillation, so the active defense process was achieved, besides the effectiveness of strategy and the accuracy of arithmetic were proved.