Abstract: This article describes the qualitative analysis of poisonous substances in 6 kinds of coating volatiles by GC/MS. A total of 48 compounds have been identified, i.e. 28 kinds of hydrocarbons, 6 kinds of aromatic compounds, 4 kinds of aldehydes, 2 kinds of alkones, 1 kind of ketenes, 2 kinds of alcohols, 1 kind of esters, 1 kind of ethers and 3 kinds undefined. There are identified 21 compounds from purplish red deck paint, 20 from zinc white paste paint, 14 from cycloxygen bitumen antirust paint, 21 from orchid grey ship paint, 19 from Fe red cyclic fat priming paint and 20 from alcohol acid magnetism paint.