Portable on-site physical evidence protection device

The utility model relates to the technical field of physical evidence protection, and discloses a portable on-site physical evidence protection device which comprises a supporting part, and the supporting part comprises a supporting piece, a fixing piece installed at the bottom end of the supporting piece and a connecting ring penetrating through the ends of the supporting piece. The fixing piece is of a nested structure, a hook or a clamping groove is arranged on the outer layer of the fixing piece and used for being fixed to the lower end of the outer side face of the supporting piece, and a positioning piece is installed on the inner layer of the fixing piece and is of a fixing needle or fixing suction cup structure and used for being fixed to indoor and outdoor hard ground or soil ground. According to the utility model, the supporting part provided with the protective cover is used for protecting the physical evidence on site, so that the damage of natural factors to the physical evidence can be avoided t