Air combat situation assessment is one of the key problems in air combat simulation and autonomous maneuvering decision-making of unmanned combat aircraft. This paper describes the main analysis methods of air combat situation assessment and the research status at home and abroad. The key technologies of beyond-visual range air combat situation assessment modeling and close-range air combat situation assessment are clarified. This paper analyzes the development trend of air combat situation assessment technology, and provides reference for the research of intelligent air combat decision-making.