The invention discloses a biological sample low-temperature preservation box, and particularly relates to the technical field of
DNA sample preservation, the biological sample low-temperature preservation box comprises a box body and a first box door, the first box door is movably connected with the box body through a hinge, a touch screen, a first camera and a
fingerprint lock are fixedly installed at the top end of the box body, and a second camera is fixedly installed on the front side of the box body; a
semiconductor refrigerator is fixedly installed in the box body, a second box door is movably arranged on the rear side of the first box door, and the second box door is movably connected with the front side of the box body through a hinge. The threaded
ice storage barrel is rotated to be far away from the box body, then ice blocks are placed in the threaded
ice storage barrel, finally the threaded
ice storage barrel is installed and fixed, auxiliary
refrigeration is conducted on the interior of the box body, and meanwhile, along with gradual melting of the ice blocks, generated water enters the
water storage barrel through the guide
pipe; the one-way valve can prevent water in the
water storage barrel from flowing back into the threaded ice storage barrel, the structure is simple, and auxiliary
refrigeration can be conveniently carried out on the interior of the box body.