In the forest areas of the northern hemisphere, seasonal snow cover area occupies 8% global land surface. Seasonal snow cover reserves of the northeast are the most in our country. Snow as an important part in ecosystem possesses unique ecological function that has regulating effect on soil greenhouse gas. Currently, some researches focus on the change of soil greenhouse gas in different snow period in the northern circumpolar latitudes forest, however, there is no report about cold temperate snow cover effect on soil greenhouse gas emission. In this subject, temperate snow cover effect on Larix gmelini soil greenhouse gas flux in Great Khingan will be studied by the method of field experiment and laboratory experiments, we try to reveal the rules that snow cover regulating effect on soil greenhouse gas emission of cold temperate Larix gmelini Forest, and provide a basis for rationally evaluating greenhouse gases contribution to global atmospheric greenhouse gases. It has important significance to scientific problem, including the study of ecosystem function and global change contribution and regulation..Keywords: snow cover, soil greenhouse gas，cold temperate Larix gmelini forest, regulating effect, Great Khingan