The phenolic compounds, in humic acid extracted from Ilgın Lignite by alkaline extraction was determined by gas chromatography-mass spectrometry. Two temperature gradient programming have been applied. The 14 and 9 (totally 21) phenolic compounds in two fraction extracted at two different pH (7.5 and 8.3) from humic acid, respectively, have been isolated. Most of them have not been, previously, found out in coal derivatives. The separation and identification of phenolic compounds were verified by analysis of the GC-MS and comparisons of the retention time and mass spectra with standards phenolic compounds under computer control has been made automatically. Thus the confidence level of this analysis are very high.