Method for producing resin particles and drying device

Provided are a method for producing resin particles and a drying device, the method comprising a drying step for drying resin particles, which have been phase-changed by pressure in a wet state, by passing the resin particles and a first gas through a drying tube without circulation, the drying tube having: a supply port for supplying a first gas to the resin particles; supplying the resin particles into the drying tube; a gas ejection port that ejects a second gas toward the resin particles passing through the drying tube; and a discharge port for discharging the resin particles from the inside of the drying tube, the discharge speed of the second gas discharged from the gas discharge port being 50 m/s or more. 本发明提供一种树脂粒子的制造方法及干燥装置，所述树脂粒子的制造方法包括通过使湿润状态下的因压力而发生相变的树脂粒子与第一气体一起在干燥管内不循环地通过而进行干燥的干燥工序，所述干燥管具有：供给口，将所述树脂粒子供给到所述干燥管内；气体喷出口，向通过所述干燥管内的所述树脂粒子喷出第二气体；以及排出口，自所述干燥管内排出所述树脂粒子，自所述气体喷出口喷出的所述第二气体的喷出速度为50m/s以上。