The utility model relates to the field of mechanical property testing, and discloses a minimally invasive tensile sample and a clamp of the minimally invasive tensile sample. The minimally invasive tensile sample comprises a connecting part (1), and a first end part (2) and a second end part (3) which are respectively positioned at two ends of the connecting part, wherein the connecting part (1),the first end part (2) and the second end part (3) adopt cylindrical structures and are coaxially arranged; wherein the diameter of the connecting part (1) is smaller than the diameters of the first end part (2) and the second end part (3), the first end part (2) and the connecting part are connected through a first arc transition part (4) arranged in the circumferential direction, and the secondend part (3) and the connecting part are connected through a second arc transition part (5) arranged in the circumferential direction. According to the minimally invasive tensile sample disclosed by the utility model, an end thread design is omitted, so that a thread machining preparation procedure is omitted in a sample machining process, and the minimally invasive tensile sample is not limited by conditions such as machining in a preparation process, so that preparation of a small-size sample meeting the conditions can be realized.