Aimed at the problems that the current manned/unmanned cooperative combat mission is complex, the complexion of weapons and battlefield situation is changed increasingly, and the amount of information at the interactive interface increases rapidly, a model of manned/unmanned cooperative combat interactive mission based on PCTBTA is proposed. The model focuses on the influence of external environmental factors on the operator's human-computer interaction in manned/unmanned cooperative combat, and the default tasks of the operator under conditions of these influences. On the basis of comprehensively analyzing manned/unmanned cooperative combat mission process and its characteristics, constructing the conceptual model of interactive mission, and then determining five typical combat missions in manned/unmanned cooperative operation , and studying and analyzing the conceptual elements such as objectives, sequences, display variables, influencing factors, and operations of each task, an interactive mission model of manned and unmanned cooperative combat in a dynamic environment is established according to the conceptual model and conceptual element analysis of manned/unmanned cooperative combat. Compared with the CTT, GOMS and the other models, this model is capable of integrating external factors to change all the time in combat, and to further describe the interactive task process of manned/unmanned collaborative combat in a dynamic battlefield environment, providing a theoretical model for operators to efficiently complete interactive tasks in manned/unmanned collaborative combat, and laying a foundation for the optimization design of man-machine interface of various manned/unmanned collaborative combat information systems in the future.