Forensic medicine dry specimen reagent and preparation method thereof

The invention relates to the field of biological matrix detection, and provides a forensic medicine dry specimen reagent which comprises specimen preservation filter paper, a vacuum bag arranged outside the specimen preservation filter paper in a sleeving mode and a plurality of electronic tags attached to the outer surface of the vacuum bag. Wherein a plurality of specimen areas are uniformly arranged on the specimen preservation filter paper; according to the invention, the liquid specimen is dried and is in a dry and oxygen-free environment, so that the specimen is not easy to decay and deteriorate and is easy to store; by controlling various parameters of the preparation method, the prepared dry specimen reagent is stable in parameter and has relatively high productization value; after the specimen is naturally dried, the biological safety risk is greatly reduced; a plurality of specimen areas are arranged, so that specimens can be taken and used at any time, and the specimens in other specimen areas cann