To provide a spraying device and a spraying method of a powdery or granular material capable of changing a place and an amount of spraying powdery particles according to time.SOLUTION: The spraying device 15 for spraying the granular material P on the moving body 10 has the rectifying device 21 arranged above the moving body 10, the rectifying device 21 Has a slope 16 with a descending gradient from one end side to the other end side and a movable type change wall 18 provided on the slope 16 to change the flow direction of the granular material P, The body P is supplied to the one end side of the inclined surface 16 and collides with the change wall 18 in the process in which the powder particle P rolls down the inclined surface 16 so as to change its traveling direction and from the other end side of the inclined surface 16 And falls on the movable body (10).(FIG. 10)
