The invention discloses a food vacuum 
packaging machine with a sterilization function. The food vacuum 
packaging machine comprises a bottom plate, an 
ultraviolet sterilization mechanism and a high-temperature instantaneous sterilization mechanism, wherein a supporting column, a vacuum mechanism, a main controller and a conveying belt are arranged on the upper portion of the bottom plate, a power source of the conveying belt is driven by a motor, and the supporting column is arranged on one side of the main controller. According to the food vacuum 
packaging machine, two vacuum machines are arranged, negative pressure is provided for the whole 
processing environment, a vacuum environment is extracted for a packaging bag sleeved with a 
steel belt, so that food is further protected, the 
bacterial activity is reduced, and sterilization work is completed indirectly; the 
ultraviolet sterilization mechanism and the high-temperature instantaneous sterilization mechanism are arranged, and the food is sterilized through 
ultraviolet irradiation sterilization and high-temperature instantaneous 
steam sterilization, so that the storage life of the food is prolonged, and the 
food safety is improved; and signals are transmitted to the main controller through an 
infrared displacement sensor and a temperature 
detector, so that the displacement speed of the conveying belt and a first heater can beconveniently controlled, the overall working precision is improved, and then the sterilization performance is improved.