Universal testing machine with clamping function

The invention relates to a universal testing machine with a clamping function, which comprises a workbench and at least two clamping pieces, and the clamping pieces are distributed along the circumferential direction of a place where a material to be tested is placed; a radial sliding piece is arranged on the clamping piece, a force measuring piece is arranged at one end, close to the tested material, of the radial sliding piece, the radial sliding piece is used for driving the force measuring piece to be far away from or close to the tested material placing position, and the force measuring piece is used for being in contact with the tested material to collect a force value and is matched with other force measuring pieces to clamp the tested material; the radial sliding part is connected with a control module, the control module is connected with a starting module, the starting module is used for outputting a starting signal, and the control module responds to the starting signal and controls the radial slid