To provide a work machining method capable of improving yield and increasing the productivity.

Multiple pre-processed works 28 composed of sintered body are prepared. Cohesive members are interposed between the multiple works 28 and the multiple works 28 are sequentially carried and machined along guides 16a and 16b provided on a carrier passage 14. The cohesive members 32 are interposed between the works 28 so that a contact area A between the cohesive member 32 and the work 28 becomes not less than 5% and not more than 50% of the area B of the end face 30a of the work 28 and the thickness T of the cohesive member 32 is not less than 0.05 mm and not more than 1 mm.