The aerodynamic environment in low-altitude regionsis characterised by complex flow field structures, diverse disturbance sources, and significant coupling effects. These factors have a significant impact on the aerodynamic performance and flight safety of unmanned aerial vehicles(UAVs), making them a key focus of research in the field of low-altitude UAV aerodynamics. Three typical scenarios have been systematical reviewed: complex low-altitude wind fields, spatially constrained environments, and multi-UAV environments. The fundamental characteristics and modelling approaches of complex low-altitude wind fields have been systematically outlined, and their effects on UAVs and key research methodologies have been summarised. Spatially constrained environments are categorised based on disturbance mechanisms and constraint types, and the review provides a comprehensive summary of the aerodynamic impacts on UAVs within such environments. Spatially constrained environments are categorised based on disturbance mechanisms and constraint types, and a comprehensive summary of the aerodynamic impacts on UAVs within such environments has been provided. The aerodynamic characteristics of UAVs in multi-UAV environments have been summarised, and the aerodynamic coupling mechanisms and research methodologies for cooperative and non-formation flight scenarios have been outlined. Building upon this foundation, the core issues and key challenges currently facing aerodynamic research on UAVs in low-altitude environments have been further refined, and future research priorities in this field have been outlined.