The invention relates to the technical field of medical equipment, and discloses a reversing device for a capped test tube sorting process. The reversing device for the capped test tube sorting process comprises a bottom plate; a sliding block is fixedly arranged on the outer wall of the front surface of the top of the bottom plate; a jacking metal plate is movably arranged on the outer wall of the front surface of the sliding block; sliding rails are fixedly connected to the outer wall of the front surface of a sliding rail connecting device; one end, far away from the sliding rail connectingdevice, of the sliding rails is fixedly connected with an upper end baffle; and one end, far away from the sliding rails, of the upper end baffles is fixedly connected with an upper end connecting block. The reversing device for the capped test tube sorting process can accurately and efficiently complete reversing operations before secondary printing and formal sorting, and the convenience is provided for subsequent secondary printing and sorting operation; for hospitals, the labor cost can be reduced, the error rate can be reduced, and the efficiency can be improved; and for patients, the waiting time can be shortened, and the user experience can be improved.