To provide a testing apparatus and a testing process capable of performing tests suitable for operating environments of a buffer.

Since the testing apparatus provided with a shaker 1 for vibrating one end (a) of the buffer D for measuring a damping force generated by the buffer D is provided with both a load means 10 for providing a load for the other end (b) of the buffer D and a load detection means 30 for detecting a load acting on the buffer D, the other end side of the buffer D becomes a free end and can be vibrated, and it is thereby possible to perform tests suitable for operating environments of the buffer D.