Fulvio acid eztraoted from weathered coal (Tulufan, Xinjian) was methylated with CH₂N₂ and then fractionated. The low molecular weight fraction(M_n=548) separated into 19 components by gas chromatographic method. Among these components, 17 of which were identified as benzene oarbogylio acids and phenolio acids by using GC-MS analysis and by comparing with authentic compounds. These acidic components account for 29% of the fulvio acid studied. The other two components are heterooyolio nitrogeneous compounds. This fulvio acid differs fzom soil fnlvic acid in that it does not contain alkanes and fatty aoids.