These peptide‐dye conjugates can not only light up the tumor but also intraoperatively identify tumor cells in the margin to increase the possibility of complete resection.[52] Besides, some peptides discovered from the phage display technology, such as the esophageal neoplasia targeted ASYNYDA peptide EGFR targeted QRHKPRE peptide and ErbB2 targeted KSPNPRF peptide, have been successfully used for labeling fluorophores. This evidence concerns the gene ERBB2 and neoplasm.