The invention discloses a negative pressure
dry ice food storage box which comprises a box body, a box cover, a
piston exhaust pump and a
dry ice storage chamber, wherein an upper end opening of the box body is provided with sealing sockets; a lower end opening of the box cover is provided with corresponding sealing
insertion edges; the box body is internally provided with a
food storage chamber; the
food storage chamber is internally provided with the
dry ice storage chamber, and is divide into a plurality of food storage cells; and the
piston exhaust pump is mounted in the box body through an
air pump mounting port formed in the side surface of the box body. The negative pressure dry ice food storage box has the function of pumping air, and the interior of the sealed food storage chamber is forced to be in a negative pressure state through pumping a part of air in the box body; in addition, the dry
ice storage chamber has the functions of storing dry ices and releasing
carbon dioxide gas; the food storage chamber is filled with the released
carbon dioxide gas,
bacteria are difficult to survive and reproduce due to the fact that
bacteria are kept in a negative pressure environment and in the
carbon dioxide gas for a long time, so that the function of inhibiting
bacteria is exerted; bacteria breeding in the food storage chamber is avoided or reduced; spoilage of food is retarded; negative pressure dry ice food storage box is high in efficiency and low in cost; and the purpose of storing the food well is achieved.