The utility model relates to a portable specimen box, which solves the problem that a current specimen box is heavy in weight, limited in inner space and not easy to carry, and belongs to the field of practical tools. The portable specimen box consists of five parts, namely a fixed frame, height adjusting handles, a fixed plug, light high density thin foam plates and a coating. A set of height adjusting handles is fixed at a same height on the fixed frame, the light high density thin foam plates are arranged on the height adjusting handles, and the height adjusting handles are sealed by a fixed plug patchhole strip, so that the light high-density thin foam plates are completely fixed. A specimen is arranged on the light high density thin foam plates. After one layer is filled, another set of the height adjusting handles are fixed again to arrange the light high density thin foam plates. After the specimen box is filled, a strip-typed hole column of a front wall is inserted. The specimen box is arranged outside the coating, so that the specimen can be carried anywhere, and a perfectness ratio of the specimen can be ensured, and a predetermined purpose can be achieved.