To provide a powder of a Co-based self-fluxing alloy, which can form a powder that can form a thermal-sprayed film free from voids superior in wear resistance, and to provide a method for producing the same.

The powder of the self-fluxing alloy having WC grains dispersed therein is a powder in which the WC grains are dispersed in the inner part of the self-fluxing alloy. In the WC grains, 0.1 mass% or more of carbide-forming elements except W do not exist. In addition, a powder of a self-fluxing composite alloy having WC grains dispersed therein contains 15-60% of the WC grains with respect to the powder of the self-fluxing alloy having WC grains dispersed therein. A method for producing the same is also disclosed.

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