The invention discloses a tire anti-damage device which comprises a support, a supporting piece and a push unit. The supporting piece and the push unit are arranged on the support. The push unit is used for pushing the supporting piece to be bent to form a protruding part. The supporting piece is used for jacking a tire of a vehicle after the protruding part is formed in a bending manner. By the adoption of the tire anti-damage device, the supporting piece and the push unit are arranged, the push unit is used for pushing the supporting piece to be bent to form the protruding part, the protruding part of the supporting piece is used for jacking the tire stopped on a slope or a roadbed, the extrusion force borne by the tire is relieved, and the tire is prevented from being damaged.