Abstract: Abstract: Bench-scale dynamic tube furnace experiment and middle-scale single burning item experiment within the current burning behavior classification framework were used as the smoke generation model, typical flame retardant and non-flame retardant materials were selected to carry out the experiments mentioned above, gas analysis technology such as FTIR was used to measure the gas composition data in real time, calculation model such as effective dose fraction (FED) was used to quantify the fire effluents toxicity. The results show that the FED1 of smoke generated from dynamic tubular furnace is about 4 - 17 times as much as the FED3max of smoke from the single burning item experiment , the FED values obtained from the single combustion experiment of flame-retardant materials are usually less than 0.15, while the FED values obtained from easily-flammable materials are as high as 0.65; Based on the bench-scale dynamic tubular furnace and the single burning item experiment as the smoke generation model, the toxic component calculation models FED1 and FED3 should be used to make a representative, effective and convenient evaluation of the smoke toxicity of materials in the non-flaming stage (oxidation pyrolysis) and the well ventilated flaming fire stage.

Key words: Key words: dynamic tube furnace method, single burning item experiment, smoke generation model, fire effluent toxicity