The invention belongs to a laser processing technology for enhancing the surface hardness, i.e. the wearing resistance of titanium or titanium alloy, in particular to a laser hard-surface coating process method of a titanium alloy vane of a gas turbine. In the invention, corresponding mantle clamping fixture is adopted according to the geometrical shapes of structure of vane apex or damping convex shoulders of the vane, powder is placed in the mantle clamping fixture in advance, a static powder bed is formed by the mantle clamping fixture and the powder added in the mantle clamping fixture, powder is uniformly placed on the vane apex of the vane or the damping convex shoulders of the vane in advance by the static powder bed, and inert gases or N2 is adopted to protect a laser radiation area and carry out laser radiation on the vane. A hard-surface coating with the hardness of 35 to 62 HRC and the thickness of 0.05 to 2.0mm can be formed on the vane apex or the damping convex shoulder of the titanium alloy vane when the invention is adopted. The invention has the advantages that vacuum is not needed; laser cladding can be carried out only under the protection of inert gases of Ar, He, and the like in atmosphere conditions; the operation is convenient; and the formed hard-surface coating and basal body of the vane have good adapter properties in physics and chemistry.