The invention discloses a tubular braze coating material. The tubular braze coating material is of a double-layer filament-shaped or strip-shaped structure shaped like a belt core, the outer layer is a brazing alloy wrapping layer, and the inner layer is composed of mixtures of hard alloy particles and brazing flux. The mixtures are composed of, by weight, the hard alloy particles of 80-90% and the balance brazing flux. Compared with traditional suspending slurry braze coating materials or sheet braze coating materials formed by powdery brazing filler metal, hard alloy particles, adhesives, organic matter and the like, the tubular braze coating material has the advantages that the brazing flux is contained internally, quantitative and automatic addition of the brazing flux is realized in the braze coating process, the proportion of brazing alloy and the proportion of the hard alloy particles are uniform, the hard alloy particles are uniformly distributed after braze coating, and storage, transportation and use are convenient.