Most importantly, the hydrogel with ROS scavenging and pH‐regulating ability protects cells from oxidative stress and induces macrophages into M2 polarization to reduce inflammatory cytokines through PI3K/AKT/NF‐κB and MAPK pathways, exerting anti‐inflammatory effects and reshaping the inflammatory microenvironment, thereby effectively treating typical IDs, including S. aureus infected wound and rheumatoid arthritis in rats. The gene discussed is NFKB1; the disease is rheumatoid arthritis.