The invention relates to the technical field of metal material mechanical property test, more specifically, it relates to a metal material uniaxial creep resistance test sample, fixture and method. The key points of its technical solution are: it includes the testing part and the clamping part integrally formed with both ends of the testing part, the connection between the testing part and the clamping part is surrounded by a boss, the central axes of the testing part, the clamping part and the boss coincide, and The diameter of the cross-section increases sequentially; the clamping part is provided with a thread that is threadedly connected with the test fixture. The clamp fixes the clamping part, and when the tensile creep of the sample needs to be tested, the threaded connection is better for clamping, and it is not easy to slide during the test, so the test result is more accurate; the compressive creep of the sample needs to be tested The threaded connection can also play a very good role in fixing, the clamping and clamping of the boss is more stable, the boss has a certain centering effect, and the test results are more accurate; Determination of compressive creep and tensile creep with high test efficiency.