目的量子点光激发可发射荧光,具有长时间、多目标和灵敏性高等独特的光学性质,在肿瘤细胞标记和生物应用中得到了广泛应用。通过量子点标记定位肿瘤细胞,对寻找癌变部位具有指导作用。量子点作为能量供体,在肿瘤光动力学治疗研究得到关注。本文简要介绍量子点光学特性,综述量子点荧光探针在肿瘤诊断和肿瘤光动力学治疗方面应用研究。 Purpose Quantum dots light excitation can emit fluorescence, with long-term, multi-objective and high sensitivity unique optical properties, in tumor cell markers and biological applications has been widely used. Targeting cancer cells through QD markers can guide the search for cancerous sites. Quantum dots as energy donors have drawn attention in the research of tumor photodynamic therapy. This article briefly introduces the optical properties of quantum dots and reviews the applications of quantum dot fluorescence probes in tumor diagnosis and tumor photodynamic therapy.