In recent years, the status of air supremacy in the modern battlefield has rapidly increased. If you want to obtain air supremacy before the enemy aircraft, you must have strong electromagnetic sensing capabilities. Traditional airborne electronic countermeasure equipment has limited ability to perceive complex electromagnetic environments and cannot effectively serve cognitive electronic warfare. Airborne Multifunction Radar (AMR) has multiple functions, multiple functions, and strong perception. Ability and high self-adaptability characteristics, just can effectively solve this problem. Based on the background of cognitive electronic warfare, this article reviews the development history of airborne AMR and analyzes the development trend of AMR.