The invention relates to a combined horizontal test bench, which includes a pedestal, and a loading device, a fixture, a data collection apparatus and a supporting bench that are successively mounted on the pedestal in the same horizontal line. The fixture is used for axially fixing a test piece; the loading device includes a tension and compression assembly and a torsional assembly, wherein the tension and compression assembly generates an axial tension and compression load and the torsion assembly generates an axial torsional load, and the axial torsional load and the tension and compression load are linked and are loaded on the fixture; the data collection apparatus is connected between the supporting bench and the fixture, thereby collecting the data of tension and compression load and/or torque on the loaded test piece. The invention also provides corresponding material performance test method and material performance test system for the test bench. The test bench solves a technical problem of single loading mode in a conventional experimental loading bench and can apply tension and compression load and torsional load to the test piece, so that the whole system has high measurement precision, good stability, and reliable performance evaluation on materials.