An oxidation resistant Ti5Si3/NiTi intermetallic matrix composite coating was fabricated on substrate of a titanium alloy BT9 by laser cladding using the Ni - Ti-Si alloy powders. The oxidation resistance of the laser clad intermetallic composide coating was investigated under the testing condition of 1000℃ and 50 hours. The results indicate that the laser clad intermetallic composite coating has a rapidly solidified homogeneous microstruc-ture consisting of Ti5Si3 primary particles uniformly distributed in the Ti5Si3/NiTi eutectic matrix and it is metal-lurgically bonded to the titanium substrate. The isothermal elevated -temperature oxidation resistance of the laser clad intermetallic composite coating is enhanced significantly. Oxidation resistance of the laser clad intermetallic composite coating was up to 1. 79 times higher than that of the original titanium alloy BT9. The oxidation kinetics of the laser clad γ/NiTi intermetallic composite coating is conforming to the parabolic-rate law equation at the testing condition.The excellent oxidation resistance of the coating is mainly attributed tO that the relatively continuous OXide scales which mainly consist of TiO2，A1203 and SiO2 prevented the inner part of the laser clad interm etallic composite coating from being further oxidized．