Provided is a powder coating device. The powder coating device performs powder coating by inserting peeled parts at a lower end of a stator into a powder flow tank filled with a powder resin and includes: a surface height measurement part measuring a surface height of the powder resin; a peel height measurement part measuring a height of upper ends of the peeled parts; a swing part swinging the powder resin; an air supply part supplying air toward the powder flow tank via a porous body provided below an open bottom surface of the powder flow tank, and flowing the powder resin; and an adjustment part adjusting at least one of an air flow rate, a swing amount of the powder flow tank, an entry posture and an entry amount of the stator according to measurement results of the surface height measurement part and the peel height measurement part.