Abstract: PC/ABS alloys were prepared by melt blending and the effects of adsorbents and extractants on the mechanical performance and the odor and volatile organic compounds (VOC) contents of the resulting alloys were investigated by mechanical tests and thermal desorption gas phase/mass spectrometry analysis. The results indicated that the odor of the alloys increased with increasing the amount of adsorbents and extractants, but the total VOC content decreased. Furthermore, there was no side-effect found on the mechanical properties of the alloys. In addition, the hygroscopicity of the alloys became worse due to the increase of the amount of adsorbents. With the addition of 5 wt % adsorbents, the water absorption of the alloys increased by a factor of 1.7 after naturally stored for 480 h. When the dosages of adsorbent and extractant were 0.5 and 1.5 wt %, respectively, the alloy achieved the optimum comprehensive performance, the odor intensity reached level 3, the comfort level was improved up to level 0, and the total VOC was reduced by 57.9 % compared to the pure PC/ABS alloy. The ecological friendly performance of the alloy by using extractant was better than that by adsorbent, but a combination of them could generated a much better effect than the individuals.