Abstract: Retinoid X receptor (RXR) acts as ligand-dependent transcription factors playing an important role in regulating a serial of physiological processes, such as embryo development and organ homeostasis. At the molecular level, RXRs exert their functions by inter-activating with multiple signal pathways to regulate target gene expression which control cell growth, differentiation, survival and death. The interference in the network of RXR and other signal pathways has turned RXR into an attractive drug target.