Abstract: In order to investigate the effects of pyrolytic conditions on the deliveries of eight volatile carbonyls, including formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, crotonaldehyde, 2-butanone and butyraldehyde, in cigarette smoke, a method for trapping and analyzing the volatile carbonyls in the pyrolytic products of tobacco shreds was developed based on an in-house cigarette smoking simulator. The volatile carbonyls in the pyrolysis products of Virginia and blended type cigarette filler under different pyrolytic conditions were analyzed. The results showed that:1) The relative standard deviations of the tested eight carbonyls were all less than 10% under the same pyrolytic condition. 2) With the increase of O₂ content in pyrolytic atmosphere, the deliveries of carbonyls increased except for 2-butanone and butyraldehyde. 3) With the increase of pyrolytic gas flow, the delivery of formaldehyde increased significantly, while the other carbonyls changed slightly. 4) With the raise of heating rate, the deliveries of formaldehyde and propionaldehyde increased significantly, those of acetaldehyde, acetone and acrolein increased to different extents, while those of crotonaldehyde, 2-butanone and butyraldehyde were basically not affected. 5) The deliveries of carbonyls topped at 400-500℃. Moreover, the formaldehyde delivery of Virginia type cigarette filler was significantly higher than that of blended type one at the same temperature.