To provide a non-slip fitting for a crawler comprising a novel structure necessary for traveling on packed snow and ice, and an attaching method comprising a novel constitution for the non-slip fitting for the crawler.

In the non-slip fitting 1 for the crawler, mutual connecting parts 21 and 21 of a pair of hook fitting parts 2 with base end sides formed as the connecting parts 21 and tip sides formed as hook shaped engaging parts 22 are connected by a fixing fitting part 3 having fixing mechanisms 4, and non-slip protrusion parts 5 are integrally incorporated on the fixing mechanisms 4 of the fixing fitting part 3.