The invention relates to a pendulum bob type shearing-resistant impact testing machine and a testing method thereof, belonging to the technical field of concrete material testing. The pendulum bob type shearing-resistant impact testing machine can achieve accurate shearing-resistant impact testing result and wide application range, is convenient to carry, and can avoid danger to operators. The pendulum bob type shearing-resistant impact testing machine comprises a working shaft, a base, a support, a connecting frame, a pendulum bob, a pendulum rod, a graduated dial and a pointer; the testing method comprises the following steps: measuring the compressive strength of a test piece; horizontally placing the test piece on the support and recording the initial scale value of the pointer on the graduated dial; carrying out pendulum bob shearing-resistant impact on the front surface of the test piece; recording the ending scale value of the pointer on the graduated dial to obtain the difference of the initial scale value and the ending scale value; measuring a shearing-resistant impact force-displacement curve to obtain the shearing-resistant impact energy of the test piece; corresponding the shearing-resistant impact energy of the test piece to the difference of the initial value and the ending value.