Drip irrigation is a new water-saving irrigation technique and is widely applied in arid region in Xinjiang. However, there is little information available about its effects on greenhouse gas emissions. In this study, a field experiment was conducted to compare the effects of both drip irrigation and conventional flood irrigation on soil CO_2 and N_2O emissions during the spring wheat growing season using static close chamber method. Under drip irrigation, gas sampling was performed at between the pipes(BP)and on the pipe(OP). Results showed that: average CO_2 emissions under drip irrigation was 35.76% lower than that under flood irrigation during the spring wheat growing season, with significant difference. Average CO_2 emissions from BP and OP were 906.28 and 838.25 mg·m~(-2)·h~(-1), respectively. No differences were found between them. N_2O emissions under drip irrigation was 74.81 mug·m~(-2)·h~(-1) or 25.87% higher than that under flood irrigation. Average N_2O emissions from OP and BP were 85.76 and 63.62 mug·m~(-2)·h~(-1), respectively. However there was no significant difference between drip and flood irrigation systems(P>0.05). Cumulative emissions under drip and flood irrigations were respectively 2 188.68 and 3 180.91 g·m~(-2) for CO_2, and 188.62 and 160.60 mg·m~(-2) for N_2O. The global warming potentials of CO_2 and N_2O under drip irrigation was 983.55 g CO_2·m~(-2) lower than that under flood irrigation. Significant correlations were observed between soil CO_2 emissions from BP and air temperature, soil temperature at 5 cm and 10 cm depth(P<0.05)and soil microbial biomass carbon at 10~20 cm depth(P<0.05), and also between soil N_2O emissions under flood irrigation and soil water content at 0~10 cm and 10~20 cm depth(P<0.05). Soil N_2O emissions from OP were significantly correlated with soil water content at 0~10 cm depth (P<0.05)and that from BP were significantly correlated with soil NH+ 4 -N at 10~20 cm depth.