Abstract:The purpose of this paper was to improve the sterilization efficiency，shorten the disinfection time by optimizing the chlorine dioxide combined with heating method and analyze the physical and chemical properties of liquid egg.The results showed that the best egg source pretreatment method was immersed the egg in a chlorine dioxide solution with a concentration of 125 mg/L for 5 min and then washed it with hot water at 65 ℃for 120 s.The microbial sterilization rate on the surface of the eggshell reached 99.9 %.The pretreatment method had no significant effect on egg liquid foaming，foam stability and volatile base nitrogen.After 8 weeks of storage，the total number of colonies，foaming and volatile base nitrogen of the pretreated liquid egg were significantly better than the control group.The method could effectively extend the shelf life of the liquid egg product.