In recent years,smartphone-based detection has been more and more applied in medical diagnosis,environmental monitoring,food supervision and other research fields due to its advantages of portability,low cost,personalized customization and no need of professional training.Meanwhile,smartphone-based detection is a representative of the ingenious combination of many research fields.The applications of smartphone-based detection in food safety from 2015 to early 2020 are summarized in this review,including food additives,antibiotics,microorganisms,pesticides and heavy metals,biotoxins,and food freshness.And a prospect on this research hotspot is expected.