PROBLEM TO BE SOLVED: To provide a laser clad layer forming method and a laser clad device capable of efficiently forming a laser clad layer of metal having a melting point of 500° C. or less while preventing bead sagging. A laser clad layer forming method includes a partitioning step S1 of partitioning a portion of a peripheral surface of a base material W where a laser clad layer is to be formed into a plurality of regions each having a circumferential angle of 90 degrees or less, and a base material W. Is held so that the axial direction is horizontal, and the base material W is phased so that the normal direction of the peripheral surface of the base material W in one of the plurality of areas is within a predetermined angle range with reference to the vertically upward direction. A deciding phase determining step S3, and a modeling step S4 of irradiating the powder with laser light while supplying the powder to one region while the base material W is phase-determined to melt the powder and form a bead. , And the phase determining step S3 and the modeling step S4 are repeated for each region, and a bead is modeled over the entire planned formation portion to form a laser clad layer. [Selection diagram] Fig. 6
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