Abstract: As a kind of energy-saving and environmentally friendly lighting equipment, light-emitting diodes (LED) have the characteristics of non-toxic materials, low glare, and safe touch. With the improvement of LED performance and the reduction of using cost, in recent years, scientists have begun to apply it in the field of food preservation. Research shows that LED is beneficial to food storage and preservation in many aspects. This article summarizes the characteristics and research progress of LED technology, the preservation mechanism of LED in food preservation, the problems existing in the application of this technology, and finally puts forward the application prospect of LED food preservation technology in the future to provide references for relevant researchers.