Abstract:Upconversion luminescent materials （UCLMs） have many advantages，such as stable labeling signal，strong anti-interference，easy modification，and so on.In recent years，UCLMs have become a hot spot in the field of food detection research.In this paper，the latest applications of upconversion luminescence technology（UCLT）in the detection of food pollutants in China in recent years were reviewed.Upconversion materials doped with lanthanide rare earth elements combined with other new materials were studies in recent years to construct a new luminescence recognition system，which can be applied to the detection of food-borne pathogens，biotoxins，small molecular organic pollutants and heavy metals.By summarizing the development status of this technology in China，the developing trends and direction were put forward，which can provide reference for the evolving，deepening and further application of related researches.