Universal testing machine and tensile sample clamp thereof

The invention discloses a tensile sample clamp. The tensile sample clamp comprises a supporting clamp and clamp blocks installed on the supporting clamp, and the gap between the two clamp blocks is used for clamping a sample to be tensioned. The tensile sample clamp further comprises a clamping apparatus and baffles. The clamping apparatus is provided with a clamping hole, the sample to be tensioned can penetrate through the clamping hole in the use process, and the clamping hole is opposite to the upper end of the gap between the two clamp blocks. The baffles are installed on the clamping apparatus and can extend into the gap between the two clamp blocks to limit the sample to be tensioned from inclining along the side end of the gap, and the center lines of the two opposite baffles coincide with the center line of the upper end of the gap between the two clamp blocks. By additionally arranging the clamping apparatus and installing the baffles on the clamping apparatus, under the limiting effect of the baffles, the sample to be tensioned is prevented from inclining when placed, meanwhile, it is guaranteed that the center line of the sample to be tensioned coincides with the center line of the gap between the two clamp blocks, and the accuracy of detecting the sample to be tensioned is guaranteed.