Abstract: Forest fire disturbs the carbon cycle of forest ecosystems, and the soil carbon dynamics of forest burned area is an important part in forest carbon cycle process. In this study, the LI-6400-09 soil respiration measurement system was used to measure soil respiration (R_s) of two burned areas during the growing season in northern Daxingan Mountain of Inner Mongolia in 2011. The sites had experienced fires in  2003 and 2008, respectively. The measurements were taken in unburned, lightly burned, and severely burned plots. The results showed that, at a daily time scale, R_s occurred in a unimodal curve with the maximum at 14:00. In the growing months, R_s also showed a unimodal curve with the maximum in August. R_s occurred in the order of 2008 severely burned > 2003 severely burned > 2008 lightly burned > 2003 lightly burned > unburned. The postfire duration and fire intensity significantly affected R_s (P<0.01). By using multi-way ANOVA, it was found that the time of field measurement, postfire duration, and fire intensity significantly affected R_s (P<0.01). Regression analysis showed that an exponential relationship occurred between R_s and soil temperature at 5 cm depth and a quadratic relationship occurred between R_s and soil water at 10 cm depth. When soil water was 30% to 40%, R_s reached the maximum. Our study indicated that soil temperature was one of the main abiotic factors affecting R_s, but the form of soil water was changed by fire disturbance in the permafrost region. This uncertainty between soil respiration and soil water form needs to be further studied.