Denim laser application is to irradiate the denim with high-energy laser beam, so that the dye on the surface of denim can instantly vaporize or fade away, so as to form non fading image patterns, gradual flower shapes, cat whisker sanding and other effects on various denim fabrics. It greatly improves the production efficiency and shortens the production cycle without rework, has strong flexibility, can respond to changes in market demand in time, has a high degree of product consistency, and solves the problems of high pollution, high cost and low efficiency in traditional denim processing. It is suitable for denim washing, denim creases, denim holes, denim monkeys, denim printing and other process requirements