The work aims to summarize and analyze the current application status and theoretical status of human-machine collaboration in the military field and point out the future development trend, so as to provide theoretical directions for the technical development and design research of human-machine collaborative military systems. The current application status of human-machine collaboration in the military field was analyzed with the practical application scenarios of unmanned aircraft systems, unmanned vehicles and unmanned boats as representatives. Then, the research progress of human-machine collaborative task allocation, human-machine interaction methods, human-machine interaction interface design and human-machine collaborative effectiveness evaluation in China and abroad was analyzed in the military context. The future research trends were summarized by synthesizing the current status of the previous research. From the current status, hotspots and trends of Chinese and international research, it is concluded that the task allocation of human-machine collaboration needs to take into account factors such as personnel behavior and task timing, with the goal of improving the efficiency of human-machine collaboration, and exploring a better allocation model. The multimodal intelligent interaction will become the mainstream form of human-unmanned cluster interaction in the future, and the combined multi-channel information exchange will change the way for operators to interact with the accusation system, realizing the efficient human-unmanned cluster interaction. The situational awareness is a challenge for the future intelligent battlefield, and human-machine collaboration has laid the foundation for research in the field of intelligent situational awareness.