Abstract: Gasoline,as a common combustion promoter at fire scenes,can be influenced by different carriers and their residual components.In this study,a SPME-GC/MS detection method was employed,and thin wood chips,corrugated paper,polyethylene(PE),cotton fibers,and acetonitrile gloves were selected as carriers.By optimizing the pre-extraction time and thermal desorption time,the peak area normalization method was used to analyze the content of combustion residues.The results showed that the combustion residue components of the five carriers themselves were inconsistent with the characteristic components of gasoline,and there were differences in the composition of gasoline combustion residues among different carriers.