Cytokine-induced killer cells (CIKs) are a kind of non-MHC restricted cytotoxic T cells that have been recognized as the best adoptive immunotherapy against tumor. Dendritic cells(DCs) play a pivotal role in the interaction between tumor cells and T cells. Coculture of CIKs and DCs enhances the proliferation rate and cytotoxicity of CIKs, and has been shown to have strong cancer killing effects in various organ sites.