In this study, RBM23 did not affect the activation and expression of IkBa in our study; unexpectedly, we found that RBM23 could improve the level of RelA/p65 mRNA, thereby increasing the activity of the NF-κB signaling pathway to promote the angiogenesis of hepatocellular carcinoma. This evidence concerns the gene NFKB1 and hepatocellular carcinoma.