Methane (CH₄) oxidation in boreal forest soils is an important factor in the global CH₄ budget. Previous studies have shown that nitrogen (N) deposition alters the magnitude and direction of CH₄ uptake in boreal forest soils. However, the critical rate of atmospheric N deposition that causes the shift from stimulation of soil CH₄ uptake to inhibition, and the mechanisms responsible for these trends, are poorly understood. Investigation into the responses of CH₄ uptake flux from these soils and its driving factors relating to N input is important. In this study, a cold-temperate coniferous forest in the Great Xing'an Mountains was selected for conducting an N addition manipulative experiment. Two forms of N (NH₄⁺-N and NO₃^--N) and three N addition rates (0, 10 and 40 kg N hm^-2 a^-1) were designed to assess the responses of soil CH₄ fluxes to N addition. In the growing season (June to September) of 2010, soil atmospheric CH₄ exchange flux was measured every ten days using closed clambers. Simultaneously, soil environmental variables including soil moisture, soil temperature in the 0-10 cm horizon, soil NH₄⁺-N and NO₃^--N contents in the organic and mineral horizons, and soil pH values in the mineral soil horizon were also measured to determine the main factors affecting soil CH₄ uptake. The results showed that the average rate of CH₄ uptake in the cold-temperate coniferous forest soil was (51.5±4.70) μg m^-2 h^-1, and this was mainly controlled by soil moisture content at 0-10 cm. Although N input did not significantly affect the soil CH₄ uptake, low level NO₃^--N input did slightly stimulate soil CH₄ uptake. Further analysis revealed that soil moisture and soil temperature at 0-10 cm were not affected by N input. Soil NH₄⁺-N and NO₃^--N contents decreased greatly with soil depth and the vertical distribution pattern was obvious. In the organic layer, soil NH₄⁺-N content increased with increasing N input, whereas soil NO₃^--N content was not affected by N addition. In the mineral layer, soil NH₄⁺-N contents in the upper 10 cm were significantly affected by the levels and forms of N input, but soil NO₃^--N contents in the same soil horizon were only sensitive to NO₃^--N fertilizer addition. However, no significant changes in the soil pH at 0-10 cm were found among different N addition treatments. These results, to some degree, suggested that the sensitivity of CH₄ uptake from the N limited boreal soils in response to N input might be closely associated with the active CH₄ oxidizing zone and the vertical distribution and relative proportions of soil NH₄⁺-N and NO₃^--N. Whether chronic atmospheric N deposition will alter the trends in soil CH₄ uptake in cold-temperate coniferous forests remains uncertain and needs to be further investigated. In addition, during the analysis of the responses of CH₄ uptake to N deposition from the N limited boreal soils and its control factors, both the levels and forms of N deposition should be taken into account.