To provide a nonskid technic for an automobile travelling on a snow- covered road, in which a band is fit into a groove formed on the periphery of the tread of the automobile tire, and an antiskid chip is engaged with the band to facilitate its separation.

The captioned nonskid chip (a) is composed such that a required number of projections 4 and 5 are provided vertically on the surface of a spiral body which has opening ends at least at both ends, and a required number of fixed claws 3 are disposed from the side edge excluding the opening ends to the back face, and the captioned antislip tool A for an automobile tire comprises an endless elastic band 9 fit in a groove 8 formed on the periphery of a tread 7 of an automobile tire 6 and a nonskid chip (a) engaged with the band 9.