Combining the advantages of unmanned aerial vehicle （UAV） and millimeter-wave technologies， the UAV millimeter-wave （mmWave） communication system can provide high-speed data transmission and wide network coverage capability， which leads to a broad application prospect in military communication systems. The accurate channel model is vital for the UAV mmWave communication system design and performance evaluation. Different from the conventional mobile communication scenarios， the UAV mmWave communication scenario has obvious three-dimensional propagation characteristics. The key factors， i.e.， three-dimensional scattering space， three-dimensional flight trajectory and posture， three-dimensional array antenna and three-dimensional narrow beam， should be taken into account in the channel modeling. This paper summarizes the new requirements and challenges of UAV mmWave channel modeling， and then reviews the wireless channel modeling method and the research progress of channel models. Finally， the future development of UAV mmWave channel modeling and key technologies are given， which aims to provide reference for the scientific construction and standardization of UAV mmWave channel models.