Objective：To study the mechanical properties of the plasma- and laser-welded pure titaniums. Methods：Tensile strength was measured with instron testing machine and metallographic change was observed with metallographic microscope. Micro-hardness was also detected. The chemical composition was detected with EDAX. Results：Tensile strength and micro-hardness of plasma-welded titanium had no difference from the control group. The two kinds of joining did not change the chemical composition. Conclusion：Plasma welding can improve mechanical properties and might be suitable for pure titanium welding in restorative dentistry.