Fu et al. reported that the administration of Moutan Cortex decreased levels of cytokines such as IL-1β, IL-6, IL-10, and CXCL2 in bronchoalveolar lavage fluid of rats with LPS-induced acute lung injury (ALI) and improved leukocyte infiltration in the alveolar space [4]. This evidence concerns the gene CXCL2 and acute lung injury.