Portable preservation box

The invention discloses a portable preservation box which comprises a box body, a box cover and a partition plate. A first interlayer of a hollow structure is arranged in the box body, water is filled in the first interlayer, first guide track grooves are formed in the box body, the partition plate is movably installed on the first guide track grooves, a sealing layer is arranged on the box cover, clamping hooks are arranged on the box cover, and the box cover is connected with the box body through the clamping hooks. The portable preservation box is simple in structure and convenient to use; when the portable preservation box is used, whether the interior of the box body is partitioned into small blocks through the partition plate or not is determined according to sizes of placed items, the box body is placed into a refrigerator or a refrigeration house, the water in the interlayer is frozen, products needing transportation in a preservation mode are placed into the box body after the water is frozen, the bo