Quantum dots (QDs),fluorescen nanomaterials,have exceptional optical properties. Functionalized QDs that include QDs and targeting moieties have been considered to have the potential as novel molecular probes and suited for a number of biomedical researches,which plays an important role in biomedicine. In recent years,the functionalized QDs have exhibited an important role in biomedical research and applications,especially in the field of bioanalysis,imaging and targeting delivery.%量子点是一类具有优良光学特性的荧光纳米材料。量子点与靶向配体结合形成功能化量子点。功能化量子点被认为是潜在的、新颖的分子探针，适合于一系列生物医学研究。近年来，功能化量子点在生物医学的应用和研究领域，特别是在生物分析，生物成像和靶向运输等方面发挥着重要作用。
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