Abstract: Twenty-one compounds in vacuum pyrolyzed oil of waste printed circuit board were separated and identified by GC-MS,and the results obtained were in consistency with those obtained by IR-spectroscopy.Relative contents (%) of the compounds were found by the normalization of the peak areas.As shown by the experimental results,separation of components in vacuum pyrolyzed oil was effectively performed by using the non-polar DB-5 column.Main components with relatively higher contents (%) were as follows: phenol (30.17%),p-isopropyl-phenol (10.29%),p-phenylphenol (13.93%),p-isopropenylphenol (8.21%) and biphenol A (15.46%).