To provide a testing apparatus and a testing method for accurately determining the quality, even if a thin plate material member as a concave-convex member has a processed shape, and a concave-convex shaped surface.

The inspection apparatus 1 is provided with a vibration application unit 30 for blowing vibration application air towards a test workpiece 100, and applying a vibration to the test workpiece 100; a laser unit 20 for detecting the vibration in the test workpiece 100 vibrated by a collision of the blown vibration application air; and a fixing unit 40 for fixing and supporting the test workpiece 100 and tests the quality of the test workpiece 100 by the detected vibration. The test workpiece 100 includes an aluminum metal plate 110 formed with the concave-convex processed surface 110a, and a pressing section 101, in which the concave-convex surface is collapsed, and a fixing table 43 supports and fixes the aluminum metal plate 110 in the pressing section 101; and the laser unit 20 detects vibration in the pressing section 101.