Carbon dots as an emerging carbon nanomaterials, due to its special optical and electronic proper-ties,quantum size effect, low toxicity and good biocompatibility, since their initial discovery, have attracted considerable attention, became a hotspot of the materials, physics and chemistry, and showed good potential application in many areas such as sensing, imaging, analysis, catalysis. In this review, we described the recent progress in the field of carbon dots, introduced their optical property and applications in food detection, summa-rized the exiting problems in the development, and looked forward their prospect in the future.%碳点作为一种新兴的碳纳米材料,由于其独特的光电学特性、量子尺寸效应、低毒性、良好的生物相容性,一经发现便引起了人们的广泛关注,并成为材料物理及化学界的研究热点,在传感、成像、分析检测、催化等领域表现出很好的应用潜力.概述了碳点的研究进展,介绍了其光学特性及在食品检测中的应用,总结了其发展过程中存在的问题,并对其未来发展前景进行了展望.
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