The relevance of the research is caused by the need to study snow cover chemical composition to assess air quality and adjacent environments under climate change, which is confirmed by the steady growth of scientific publications on this topic. At the same time, there are practically no modern publications on the methodology for sampling snow cover for analytical purposes. The main aim: to study snow cover sampling practices for analytical definitions based on a review of scientific and technical information. Modern improved snow sampling techniques are needed to obtain the most reliable data on chemical composition of snow cover, provide a basis for assessing air quality dynamics and environmental protection outcomes, and will contribute to the scientific understanding of the chemical processes associated with snow under climate change. Objects: information on regulatory and scientific and technical literature in the Russian Federation on the methodology for sampling snow cover for chemical analysis; methods for preparing snow cover before sampling; instruments, equipment, means, devices for sampling snow cover in order to determine the density (physical indicator) and chemical composition of the snow cover. Methods: review of scientific and technical information and data systematization. Result. The current practice of sampling snow cover for chemical analysis has its own characteristics that differ from practices developed mainly in the 1990s. This is due to the growing number of determined chemical components of the snow cover and the requirements for the reliability of sampling. Modern, original practices of snow cover sampling for the chemical composition of the snow cover have common stages and differences depending on the geographical point of sampling and the determined chemical component. At present, a wide variety of auxiliary tools and devices not included in the register of measuring instruments for the chemical analysis of snow cover are used for sampling to study the chemical composition of snow cover, which necessitates the development of applied instrumentation in the field of chemical snow science. It is advisable to develop harmonized snow cover sampling techniques for chemical analysis.