The invention relates to a dynamic tension fracture experiment method of a material, which is a manner of striking a target plate (2) with a flying sheet (1) to make the target plate (2) generate lamination crack or damage and is characterized in that the target plate (2) is a double-layer target comprising a first-layer target plate (10) and a second-layer target plate (11) which are clung together and prepared from an identical material; after the flying sheet (1) strikes the first-layer target plate (10), impact waves (3) are respectively generated to the flying sheet (1) and the first-layer target plate (10), when the impact waves arrive at the free surface of the flying sheet (1) and the free surface of the second-layer target plate (11), the impact waves are reflected to form rarefaction waves (4), and two bundles of rarefaction waves (4) move oppositely and encounter in the second-layer target plate (11) or the first-layer target plate (10) so as to generate enough strong tensile stress; and after a certain incubation time, a stress tensile region (5) generates lamination crack or damage to form a lamination crack surface or a maximal damage surface (8).