Tumor targeting polypeptide and preparation method and application thereof

The invention relates to the field of biological medicine, in particular to a tumor targeting polypeptide and a preparation method and application thereof. The tumor targeting polypeptide is good in specific binding ability, so that the tumor targeting polypeptide can relieve the influence of tumor treating drugs on normal cells, reduce adverse drug reaction and increase a treatment effect. 本发明涉及生物医药领域，特别是涉及种肿瘤靶向多肽、制备方法及其应用。本发明公开了种肿瘤靶向多肽。本发明的肿瘤靶向多肽专性结合能力更好，从而减轻肿瘤治疗药物对正常细胞的影响，降低药物不良反应的发生，提高治疗效果。