The invention discloses a tensile test fixture used for a tubular product sample, which comprises an integral fixture comprising two concave die fixtures, two concave die cushion blocks, two convex die fixtures and two convex die cushion blocks, an upper positioning plate and a lower positioning plate. The two convex die cushion blocks are respectively fixed on the mounting surfaces of the two convex die fixtures; and the two concave die cushion blocks are respectively fixed on the mounting surfaces of the two concave die fixtures, and the convex arc faces of the convex die cushion blocks andthe concave arc faces of the concave die cushion blocks are matched to become a pair of fixtures. The upper positioning plate and the lower positioning plate are respectively fixed on the side surfaces of the two convex die fixtures. The tensile test fixture is connected and positioned with a testing machine by the flanges of the convex die fixtures and the flanges of the concave die fixtures. The invention can firmly fix the tubular product sample and avoids the performance change of a tubular product caused by the condition that both ends of the tubular product sample are flatly clamped, thereby obtaining the accurate tensile property of the tubular product and having the characteristics of simple structure and convenient and reliable use.