By the laser cladding technique, the Nb-Al-Ti high temperature alloy coatings with different Ti contents are prepared on the TC4 alloy surfaces, and the influence of Ti contents on the microstructure, hardness and high temperature oxidation resistance property of alloy coatings is investigated. The results show that, with the increment of Ti addition, the microstructure develops from β-(Nb,Ti) dentrite+interdendritic Nb3Al to β-(Nb,Ti) dentrite+interdendritic Nb3Al+Nb2Al, which results in an increase in microhardness. Under the influences of the intermetallic compounds quantity and microsegregation, the high temperature oxidation resistance of alloy coatings is optimal with a Ti addition of 15.18%.