To provide a repulsion type portable hardness meter capable of carrying out a test inexpensively even when replacing a detector.

This repulsion type portable hardness meter 100 includes the detector 1 for detecting an impact speed and a repulsion speed of an impact hammer 101 by bringing the impact hammer into collision with a sample S, and a computation display 2 for computing a hardness of the sample, based on an input of a detection result by the detector, and for displaying a computation result therein, and the meter 100 further includes a storage part (for example, the first memory 115) provided in the detector to store inherent detector information as to the detector.