Spraying device powder including a main body (1) thereof, a powder container (2) fixed to the main body containing powder such as therapeutic agents, a channel pressurized gas (3) disposed in the main body which is supplied dust inside the dust container (2), and a power supply pressurized gas (5) which supplies pressurized gas to channel pressurized gas (3), provided the dust within the dust container (2) to the pressurized gas supplied to channel pressurized gas (3) from the power supply of pressurized gas (5) to be sprayed together with pressurized gas, and an eccentric rotor (31) provided in the main body (1) rotatably having a center of gravity deviated from a center of rotation, and a drive means for rotation provided for rotating the eccentric rotor (31) for applying vibration to the main body (1) and the container p olvo by rotation of the eccentric rotor when the powder is sprayed with pressurized gas, the device being characterized in that: a support member (7) is fixed to the main body (1), the support element (7) is attached to the dust container (2), the support element (7) is further formed with an inlet (7A) and an outlet (7B) constituting the channel of pressurized gas communicating with each hole entry (7A) and the outlet (7B) through a channel and a communication channel (24) communicating with the dust container (2) is formed in the channel to allow the powder inside the container powder (2) is supplied from the communication channel (24) to the channel communicating between the inlet (7A) and the outlet (7B), in which a throttled portion (21a) with Venturi effect it is formed in the channel communicating between the port entr ada (7A) and the outlet (7B), the communication channel communicating with the constricted portion (21a).Dispositivo de pulverización de polvo que incluye un cuerpo principal (1) del mismo, un recipiente de polvo (2) fijado al cuerpo principal que contiene polvo tal como agentes terapéuticos, un canal de gas a presión (3) di
