created artificial RBCs through RBC membrane‐coated Fe‐porphyrin‐based materials with catalase‐like activities to enhance multidimensional tumor catalytic therapy.[61] Thereafter, RBC membrane has been extensively utilized to develop a biomimetic drug delivery system for antitumor therapy with prolonged circulation, including chemotherapy drugs, genes, enzymes, and theranostic nanomaterials (metal organic frameworks, polymers, mesoporous silica nanoparticles).[24] Nevertheless, RBC membrane lacks specific active targeting ligands, restricting their efficacy in cancer treatment. Here, CAT is linked to neoplasm.