Abstract: Low-Level Jet (LLJ) is a weather phenomenon closely related to air pollution and other phenomena. The definitions of low-altitude jets, daily variation characteristics, seasonal variation characteristics, and the formation and development mechanisms of low-altitude jets including inertial oscillation theory, thermal and dynamic effects of terrain, and forcing of weather systems were summarized. The research results of numerical simulation of low-level jets developed at home and abroad and their influence on the transport and diffusion of pollutants discharged from atmospheric pollution sources were summarized. It was suggested that the next step should be to develop the low-altitude jet selection criteria and perform the cross-disciplinary study with air pollution discipline, and to carry out researches on the parameterization scheme and small-scale studies suitable for the numerical simulation of low-level jet in the region.