Novel bending fatigue test device

The utility model discloses a novel bending fatigue test device which comprises an electromagnetic vibration table and a vibration amplification tool, a vibration output end at the top of the electromagnetic vibration table is fixedly connected with the bottom of the vibration amplification tool; the vibration amplification tool is used for fixedly connecting a metal bar test piece; the vibration amplification tool comprises a bottom plate, a left cantilever structure and a right cantilever structure; the bottom plate is fixedly connected with a vibration output end at the top of the electromagnetic vibration table; the left cantilever structure and the right cantilever structure are arranged at the left end and the right end of the top of the bottom plate correspondingly. The front end of the left cantilever structure and the front end of the right cantilever structure are provided with a left annular installation base and a right annular installation base respectively. And the left annular mounting seat and