Abstract: The Winter Olympics are a highly competitive sporting environment where subtle improvements in performance can impact the final order in many events. Aerodynamic drag is the major resistive force in high-speed sports, such as ski jumping, speed skatingalpine skiing and bobsleigh. In addition, it is also the animportant determinant of sports performance in sports such as crosscountry skiing, ice hockey and snowboard cross. In order to have a clear and comprehensive understanding of the aerodynamic drag reduction technology in winter sports, this article reviewed the role of aerodynamic drag in winter sports and wind tunnel experimental methods, the wind tunnel experimental research results of aerodynamic drag reduction in winter sports in recent 20 years were also summarized. Based on the literatures, the technical scheme of aerodynamic drag reduction in winter sports was summarized, including ski jumping, bobsleigh, skeleton, luge, speed skating, alpine skiing, cross-country, biathlon, ice hockey, ski-cross and snowboard cross.