To provide a method for applying powder on the inside surface of a green tire by which the powder is uniformly and efficiently applied without splashing to the outside by electrostatically charging the powder, and also provide a device therefor.

The green tire (unvalcanized tire) is expressed by W, a powder supply nozzle for supplying powder Q inside the green tire is expressed by 2 and a static electricity generating device 3 (made by Ranzberg Industry Inc.) for charging the powder Q is attached to the tip of the powder supply nozzle 2. The static electricity generating device is for giving corona current to the powder Q at the tip of the powder supply nozzle 2 and the powder supply nozzle 2 is connected to a powder supply control unit 4 provided with a powder tank, a flow rate controlled quantity air supply device, a pressure control device, a high voltage generator and the like through a hose 1.