Provided is a material testing system provided with: an upper gripper 21 and a lower gripper 22 that grip a test piece 10; a video camera 18 that photographs the upper gripper 21 and the lower gripper 22 and the test piece 10; a first display part 25; a second display part 26; and a setting support section 61 that, in order to do test preparation where the test piece 10 is made to be gripped by the upper gripper 21 and the lower gripper 22, on the second display part 26, together with an image around the upper gripper 21 and the lower gripper 22, displays setting position indicators that support at least any one of positioning of the grippers, attachment of the test piece, and placement of gage marks to be marked on the test piece that is in a state of being gripped by the grippers.