Food preservation box

The utility model discloses a food preservation box which comprises a fixed cover. A sunken plane is arranged in the middle of the fixed cover, a protruding portion which has a width and a thickness is surrounded on the periphery of the sunken plane, and wide-side fixed buckles and long-side fixed buckles are arranged on the periphery of the protruding portion in symmetric mode. The food preservation box is further provided with a preservation box body, an opening border which has a width and a thickness is arranged at the opening end of the preservation box body, and a silicon ring is arranged between the preservation box body and the fixed cover. The outer edge of the silicon ring fits with the opening border and the outer border of the protruding portion of the fixed cover. The inner border of the silicon ring fits with the opening border and the inner border of the protruding portion of the fixed cover. A manner of adhesive dispensing of a machine is utilized by the silicon ring to be connected with the opening border. The preservation box further comprises a glass cover which is arranged between the silicon ring and the fixed cover, so that the problems that food in a traditional preservation box is directly contacted with a plastic cement cover, and a plasticizer which is generated by plastic cement can be brought to the food to trigger food safety are solved.