Comrade Liu Xiaoyan is the only director of geochemistry in Heilongjiang Province. He has made contributions to the development and personnel training of this discipline, actively carried out work in the field of environmental geology and environmental geochemistry, and made achievements in the teaching and scientific research of environmental science and environmental engineering, as well as oil and gas geology and geochemistry. He has taught 16 professional courses for undergraduates and graduate students; Instruct more than 3 doctoral and master students; He was awarded the "Top Ten" young teachers in the English version of Organic Geochemistry, and the "First Prize of Excellent Textbooks" in the school as the editor-in-chief of the English version of specialized courses. Instructing undergraduates to win the first challenge cup competition for extracurricular academic and scientific works of Daqing Petroleum Institute, with one special prize and one first prize each. He presided over and participated in more than 3 scientific research projects, including 1 national natural science foundation, 17 national key projects and provincial and ministerial key projects and natural science funds, and more than 2 scientific research projects at bureau level and other levels. The research contents mainly involve oil and gas geology and geochemistry, environmental science and environmental engineering. In recent years, it has mainly carried out research on the migration and prevention of soil organic pollutants, wetland ecological environment evaluation and pollution control, regional groundwater characteristics, oilfield ecological environment restoration, cleaner production audit and so on. For the first time in China, the improved GHM analysis method is used to analyze soil hydrocarbon organic pollutants, without complicated pretreatment steps that can cause secondary pollution. Through direct sampling, the organic pollutants in soil can be qualitatively and quantitatively analyzed and detected, and the integrated analysis process is realized. The secondary pollution before analysis and the loss of some organic pollutants in the sample are avoided, and the low-carbon hydrocarbon pollutants before C13 in the soil sample can be analyzed by this technology, thus avoiding the situation that the components before C13 are missing in the test results and improving the detection accuracy of organic pollutants in the soil; A new method and technology for rapid and accurate detection of organic pollutants in soil is established for the first time. It is time-saving, energy-saving, efficient, does not use toxic organic solvents and is environmentally friendly. The research results are helpful to conveniently, quickly and accurately study and evaluate the quantity, composition characteristics and occurrence state of organic pollutants in soil, and then accurately monitor and evaluate the organic pollutants in soil environment, and provide technical support for the prevention and control of organic pollution in soil. In the research on the migration and transformation law and prevention of organic pollutants in oil fields, the interaction among water, gas, pollutants and soil is comprehensively considered, the influence of soil pore characteristics and internal mineral components on the migration of organic pollutants is further studied, the pollution mechanism, pollution effect and migration and transformation law of organic pollutants in the environment are systematically studied, and the concept and theory of biomolecular markers are extended to the environmental protection research field of oil field environmental pollution, and the influence degree and scope of petroleum pollutants on groundwater environment are analyzed, which is the pollution in the process of oil and gas field exploration and development. The scientific research awards obtained mainly include: 1 first prize for scientific and technological progress in China universities by the Ministry of Education, 3 third prizes for scientific and technological progress at provincial and ministerial levels, 5 first prizes and 3 second prizes for scientific and technological progress by the Provincial Education Department, and 1 second prize for environmental protection science and technology. More than 5 research papers have been published at home and abroad. Comrade Liu Xiaoyan made efforts and contributions to the prevention and control of oil and gas resources and environmental pollution in Daqing.