By the means of stainless steel blade using laser surface alloying , laser cladding techniques designs and experimentation, by the analyses of induration's layer microcosmic buildup and induration characteristic analyses, optimize knife edge laser aggrandizement techniques, bring forward that, for thick knife ,adapts to using laser aggrandizement, in allusion to thin knife, adapts to using laser aggrandizement at high speed, at the same time, this technique is applied to kitchen