This study points out the characteristics of Ti-6Al-4V alloys, that contains additions of 6% Al and 4% V by weight, and it also aims about the advantages of the laser welding on these alloys compared to conventional methods of welding, because they usually cause problems such as oxidation of the faces joined by the weld, porosity and overheating of the joining metals. Occurs that Ti-6Al-4V alloys are widely used in aeronautical industry and in biomedical applications, due to its excellent properties, as well as mechanical strength, corrosion resistance, toughness and biocompatibility. But due to the high cost of these alloys, conventional welding cannot be done in order to avoid losses. The laser welding method, however, is appropriate due its accuracy, high penetration, high speed and easy handling. The main characteristics of this alloy that make it so special are: lightness, mechanical strength, biocompatibility, corrosion resistance, weldability and resistance to high temperatures. The addition of aluminum and vanadium significantly improves the strength of this alloy, remaining resistant even in corrosive or high-temperature environments. For this reason, they are widely chosen for use in biomedical and aerospace devices.