Abstract: Halogenated hydrocarbon organic tracer is a kind of chemical tracer, which has the characteristics of less adsorption on the bottom surface and easy to be detected. In this research, gas chromatography-mass spectrometry (GC/MS) was applied to analyse p-fluorobromobenzene, bromobenzene, bromocyclohexane, p-dichlorobenzene, m-dichlorobenzene, o-dichlorobenzene, p-bromochlorobenzene, 1,3,5-trichlorobenzene, 1,2,4-trichlorobenzene, p-dibromobenzene, 1,2,3-trichlorobenzene and bromododecane as twelve halogenated hydrocarbon organic petroleum tracer. The separation was performed on a Kromasil HP-5 column (phenyl methyl siloxane, 60 m×320 μm×0.25 μm). The carrier gas (N2) was at a flow rate of 1.0 mL/min. Quantitative analysis of halogenated hydrocarbon organic petroleum tracer was carried out by electron ionization (EI) source and selective ion monitoring (SIM) mode, the sample inject volume was 2 μL, the ion source temperature was 260 ℃ and the auxiliary heating temperature was 280 ℃. The results showed that twelve halogenated hydrocarbon organic petroleum tracer had good linear relationship in the range of 10-10 000 μg/L, the limit detection was 10.4 μg/L, and the standard addition recovery rate was less than 3%. This method has good precision, sensitive, simple and rapid pretreatment, which is suitable for determine the content of petroleum tracer, also can provide a technical way for petroleum tracer detection in the process of petroleum development.