The present invention relates to an antibody-drug conjugate, in particular, to an antibody-drug conjugate targeting an epidermal growth factor receptor. The present invention also relates to a composition comprising the antibody-drug conjugate, and use of the antibody-drug conjugate in manufacture of a medicament for the prophylaxis and/or treatment of a disease associated with epidermal growth factor receptor, in particular in manufacture of a medicament for prophylaxis and/or treatment of colon cancer, rectal cancer, head and neck cancer, lung cancer, ovarian cancer, cervical cancer, bladder cancer and esophageal cancer. The antibody-drug conjugate of the invention has a good inhibition activity on tumor cell growth both in vivo and in vitro, and has low toxicity, and thus has a good application prospect.
