The utility model discloses a cravat-shape tag antenna, comprising a substrate; a cravat piece, a feed transmission line and an IC welding position are printed on the substrate; one end of the feed transmission is connected with the IC welding position, the other end is connected with the narrow edge of the cravat piece, the narrow edge expands external and a rectangle frame is loaded at the end of the narrow edge; the whole tag antenna is bilaterally symmetrical with the symmetry axis which passes through the center of the IC welding position and is vertical to the feed transmission line. The utility model has advantages of simple structure, easy producing, convenient using, wide frequency band, and a recognition distance above 10 meters; the utility model is applicable for railcar management, aviation passenger and freight transportation, highroad vehicles management, logistics, propagation breeding management, archives management, access control system, security and safeguard, anti-fake labels, etc.