To improve an operation in efficiency for measuring vibration characteristics of a head gimbal assembly, while grasping resonant characteristics at high frequencies.

An apparatus for measuring the vibration characteristics of the head gimbal assembly is provided with a shaking part to which the head gimbal assembly is attached, and measures the vibration characteristics of the head gimbal assembly. The shaking part has a shaker head main body 43 made of a ceramic and a metallic fixture 45 which is solidly fixed to the shaker head main body 43 and is provided with a positioning pin 63 as a positioning part and an internal thread as a coupling part. The apparatus further has a mount block for supporting the head gimbal assembly, which has a positioning hole to be positioned by the positioning pin 63 and a fastening hole to be removably coupled with the internal thread, and is positioned to and coupled with the fixture 45.