Objective: The gene-chip technology was used to detect effect of Xiaoliu Baofei pill on tumor metastasis-associated gene expression. Method: The serum containing Xiaoliu Baofei pills in vitro was used to observe PG cells tumor metastasis-associated gene expression. Result: Compared with the treatment group PG cells in the blank group upregulated the expressionof more than 30 genes, including cell cycle genes,cell adhesion genes,cell growth and proliferation genes,apoptosis genes,transshipment,and control genes,matrix metalloproteinase protein and other metastasis-related genes. No down-regulated genes were found. Conclusion: Regulation of Xiaoliu Baofei pill on lung cancer metastasis is a multi-level and multi-targeted.