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Objective:To assess the anti-invasive effect of DDB and its possible active mechanism in human hepatocellular carcinoma MHCC97-H with high metastasis potential. Methods: MTT assay was used to evaluate the cytotoxicity of DDB to MHCC97-H cells and the anti-adhesion of DDB on MHCC97-H cells to laminin (LN) and fibronectin (FN). The anti-invasive effect of DDB was detected by the transwell chamber experiment. VEGF, nm23-H1 and uPAR mRNA transcriptions were determined by RT-PCR assay. The secretion and expression of α-fetal protein (AFP) were analyzed by ELISA and flow cytometry, respectively. Results: DDB at non-cytotoxic concentrations (10, 50 and 100 μmol/L) obviously inhibited the adhesion of MHCC97-H on LN and FN. In the transwell chamber experiment, the inhibition rates of the invasion of DDB 50 and 100 μmol/L on MHCC97-H cells were 25.8% and 32.3%, respectively. By RT-PCR assay, DDB 50 and 100 μmol/L decreased VEGF, nm23-H1 and uPAR mRNA expressions in MHCC97-H cells. The ELISA assay showed that 50, 100 and 200 μmol/L DDB decreased the AFP secretion of MHCC97-H cells, the inhibitory rates were 16.5%, 17.5% and 48.5%, respectively. DDB also decreased the expression of AFP in MHCC97-H cells by flow cytometry assay. Conclusion: DDB, an anti-hepatitis drug,at non-cytotoxic concentrations showed significant anti-invasion effect in human hepatocellular carcinoma MHCC97-H cells,and the inhibition of VEGF, nm23-H1 and uPAR expression should contribute to the anti-invasion property of DDB.