Glycosylation, one of the most common post-translational protein modifications, acts an important role in eukaryotic systems. With the continuous development of biological mass spectrometry technology, profiling the specific glycan as the tumor biomarkers has attracted the interest in glycobiology research.In this study, we chose SMMC-7721, a human hepatocellular carcinoma cell line, and L02 from human normal liver tissue as our objects materials. The total proteins of SMMC-7721 and L02 were extracted throu...