Particle production apparatus 1 including processing section 3 in which a processing liquid is adhered to a surface of each of inorganic particles contained in a powder material, chamber 4 connected to processing section 3 at a downstream side thereof in which the powder material is separated from gas carrying the material, powder material supply device 50 with supply portion 5 and supply unit 6 for supplying the powder material into processing section 3, and processing liquid spraying device 70 having a nozzle 7, a pump 8, a supply unit 9 for supplying the processing liquid, and a high-pressure gas (air) generating unit 11. Processing liquid spraying device 70 is configured to spray processing liquid as droplets onto the powder material just after the powder material being supplied into the processing section 3. Preferably, a volume of the processing section 3 is smaller than a volume of the chamber 4.