The microstructure of Mo rod and fracture morphology of Mo wire were observed by using Hitachi S 3400 scanning electron microscope (SEM), while the microstructures of Mo plate blanks were observed by optical microscope (OM). The room temperature mechanical properties of Mo wires and Mo sheets were tested in MTS C64.605 metal material testing machine. By using the Gleeble-3800 thermal simulator, the high-temperature tensile properties of Mo sheets were measured.