A powder supply device 100 of a powder laying machine according to the present invention includes a fixed seat 2, a powder storage unit 3, a powder supply unit 4, and a drive unit 5. The powder supply unit 4 includes at least a stirring bar 41 and a powder laying roller 42. Have. Provided is a powder supply device for a powder laying machine that uses the design of a stirring bar and a powder laying roller to stir and press the powder and to make the powder fine and uniform without crystallizing the powder when laying the powder. [Selection] Figure 3
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