Fast food microwave technology is used to heat cooked food, foodin the radiation of microwave can heating. Its principle, microwaveis high frequency oscillation due to the heat energy, it canpenetrate inside food in a short time and  improve  foodtemperature, at the same time also can also kill harmful bacteriain food, keep the food nutrition ingredient and keep thetraditional flavor, extend the food shelf life, improve the qualityof products. So can the application of microwave technology moreshows the importance of it. Microwave can special function in avery short time heating food, and can obtain the temperaturesterilization, will kill e. coli in food. When food heatingtemperature is  80-90 ??? and maintain temperature just 2-3minutes, the total number of bacteria was greatly reduced, thetraditional heating method. So some fast food enterprise in theproduction process for the tunnel type or the converter typemicrowave equipment for lunch box for a rapid return totemperature, sterilization, and played the unprecedentedeffect.