To provide anti-slipping technology offering extremely easy way to secure an anti-slipping chip to the tread of an automobile tire.

In an anti-slipping chip comprising a required number of projections 4 projected in the surface of a plate body 1 and a required number of fixed claws 3 arranged from a side edge to the back face of the plate body 1, an anti-slipping chip (a) comprises a recessed groove 2 formed by folding and hanging the center of the plate body 1, and an anti-slipping tool A for automobile tires comprises an endless elastic band 8, which is fitted to the groove 7, which is provided in the periphery of the tread 6 of an automobile tire 5, and the anti-slipping chip (a), which is fixed to the tread 6, with the recessed groove 2 engaged with a band 8.