Abstract: CO₂ gasification is a novel technique that uses CO₂ as a gasifying agent to produce syngas with a high calorific value for the synergistic utilization of CO₂ and biomass waste. However, the emission characteristics of NO_x and SO₂ for biomass waste under CO₂ gasification are rarely investigated. CO₂ gasification experiments were carried out on a fixed bed reactor for pine shaving in order to provide a temperature reference for thermochemical conversion utilization and pollutant emission control of biomass waste. The results show that the yield of CO is 0.24, 0.52, and 0.95 m³/kg at 700, 800, and 900 ℃, respectively, significantly higher than the yields of H₂ and CH₄. Thus, CO is the major component of the produced syngas. In addition, the carbon conversion yield is 18.36%、36.15%, and 66.09%, respectively, and the CO₂ gasification efficiency is 13.04%, 41.59%, and 92.99% at 700−900 ℃, respectively. These phenomena indicate that increasing temperatures can contribute to the thermochemical conversion of pine shaving under CO₂ gasification. Moreover, the peak concentrations and the durations required to reach the peaks of NO in produced syngas are 248, 129, and 138 mg/m³ and 140, 195, and 320 s, respectively; those for NO₂ are 339, 191, and 107 mg/m³ and 115, 150, and 265 s, respectively, and those for SO₂ are 3 299, 3 065, and 2 882 mg/m³ and 130, 175, and 180 s, respectively. The peak concentrations of both NO_x and SO₂ gradually decrease and the required durations increase as the temperatures increase, suggesting that the increase in temperature contributes to a reduction in the yields of NO_x and SO₂. However, the conversion yields of NO_x and SO₂ gradually increase as the temperatures increase, reaching 49.73% for NO_x and 68.87% for SO₂ at 900 °C. This shows that a higher temperature can enhance the oxidation effect of oxygen in raw material and gasifying agent （CO₂） on the sulfur and nitrogen in pine shaving, further promoting the conversion yields of NO_x and SO₂. Furthermore, the conversion yield of NO increases while that of NO₂ decreases with increasing temperatures. The reducing atmosphere in the furnace with CO as the major component contributes to the NO₂ being reduced to NO. Therefore, increasing the temperatures of CO₂ gasification for pine shaving can promote the reduction process of NO₂ by increasing the yield of CO.