To further investigate the therapeutic effect of QFXYW on ALI at the gene expression level, the mRNA expression levels of IL-6, TNF-α, CCL2, TLR2, IL-10, IL-1β, CXCL10, CXCL1, CXCL2, and MMP-9 were detected. The gene discussed is MMP9; the disease is acute respiratory distress syndrome.