The utility model discloses a car tyre chain is easily operated to high performance, including antiskid cover and fixed disk, the antiskid cover is provided with antiskid cover, protruding thorn, reset spring, fly leaf and reinforcement hole, the antiskid cover is total three, all sets up the outside at automobile tire, the total a plurality of of protruding thorn, evenly distributed is at the surface of antiskid cover, reset spring is total nine, and every antiskid is put in and all is provided with threely, and its one end is all connected on the inside wall of antiskid cover, the fixed disk is provided with coupling hook, rotary rod, wire rope, ratchet, displacement bar, displacement spring, rotatory handle, rotatory buckle, little trepanning, little spanner, little loop bar, big spanner, big loop bar and action bars, the coupling hook is total three, all with the reinforcement jogged joint, the utility model discloses a protruding thorn is automobile tire to the pressure grow on ground, and convenient to use person is driving an automobile in the snowfield, reset spring makes the antiskid overlap the relative displacement who keeps with automobile tire when the automobile goes.