Cell membrane‐based nanotherapeutics for inflammation. After rational engineering, a variety of types of cells (lymphocytes, monocytes, neutrophils, platelets, macrophages, stem cells, etc.) have been employed as sources of coating materials to prepare cell membrane‐based nanotherapeutics. The applicable nanoparticle cores include organic nanoparticles (polymers), inorganic nanoparticles (silica nanoparticle, metal nanoparticle), hybrid nanoparticles (MOFs), and so on. Its shape and structure can be chosen based on the target sites and applications. By leveraging the advantages of inherent properties from the source cells, these biomimetic nanotherapeutics bestow a wide range of functions in targeting, monitoring, and regulating inflammatory diseases.