The changes of soil organic carbon and soil respiration rate under different models of restoration of abandoned salinized field in arid region were studied. The result indicated that soil organic carbon contents under different models of restoration of abandoned salinized field were artificial grassland treatment>appropriate irrigation treatment>supplement planting treatment>original abandon farmland treatment. After vegetation restoration of abandoned salinized field, soil organic carbon changed to the process of carbon accumulation progressively, present carbon sink phenomenon. The soil organic carbon contents and its density of artificial grassland were 63.45% and 65.47%, respectively, higher than that of abandoned field. The regression analysis showed that there were significantly positive correlation between soil organic carbon and soil available nutrient. Soil respiration rate was significantly enhanced after vegetation restoration, soil respiration temperature sensitivity coefficient Q10 value under different models ranked as artificial grassland treatment (1.48) >appropriate irrigation treatment (1.21)>supplement planting treatment (1.15)>original abandon farmland treatment (1.13). There were significantly positive correlations between soil organic carbon and soil respiration, and positive correlations between soil organic carbon and temperature sensitivity coefficient, but no significant.