To provide a work holding method capable of certainly holding a work in a stable state without causing strain to the work when a deburring deice for the periphery of a molded product deburrs the periphery of the product.

In this work holding method, the work 1 is held down from above with a holding member turned together with the work 1 when the deburring device for the periphery deburrs the periphery of the molded product. When the work 1 is held down, the whole upper surface of the work 1 is held down with the holding member turned together with the work 1.