Portable heat preservation box for food detection

The utility model relates to the technical field of food detection equipment, in particular to a portable heat preservation box for food detection, which comprises a box body and a box cover, a plurality of containing cavities are formed in the box body, a first heat insulation wall is arranged between every two adjacent containing cavities, the first heat insulation walls are arranged in a hollow mode, and vacuum layers are arranged in the first heat insulation walls; the box cover is provided with a plurality of concave cavities, the concave cavities correspond to the containing cavities in a one-to-one mode, a second heat insulation wall is arranged between every two adjacent concave cavities, and a vacuum layer is arranged in each second heat insulation wall. According to the heat preservation box, the multiple containing cavities used for storing the food material samples can be formed, the good heat insulation capacity is achieved among the multiple containing cavities, the collection temperature of all