PROBLEM TO BE SOLVED: To provide a holding tool which can easily fix a measurement target object.SOLUTION: A dynamic characteristic measurement device 10 includes a device body 11 for measuring a dynamic response characteristic of a measurement target object 31 when the measurement target object is distorted. A holding tool 20 for a measurement target object is used for measuring the dynamic response characteristic of the measurement target object 31, using the device 10, while the measurement target object 31 is being held. The holding tool 20 is deformable according to the outer shape of the measurement target object 31 so that it can hold the measurement target object 31, and can hold the shape at the measurement.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT