An apparatus is used to produce microparticles with a uniform diameter and includes a collection tube, a plurality of extension tubes, and a reactor. The collection tube includes a fluid channel. The collection tube further includes a water-phase fluid inlet and a fluid mixture outlet, both of which intercommunicate with the fluid channel. Each of the plurality of extension tubes forms an oil-phase fluid outlet. The plurality of extension tubes expends into the fluid channel of the collection tube. Each the oil-phase fluid outlet is located inside the fluid channel of the collection tube and is located between the water-phase fluid inlet and the fluid mixture outlet. The reactor includes a reaction chamber. The reaction chamber intercommunicates with the fluid mixture outlet of the collection tube. The reactor includes a mixing member received in the reaction chamber. The reactor includes a microparticle collecting opening intercommunicating with the reaction chamber.一種微粒製造裝置,係用以製造粒徑均一的微粒,其包含:一收集管,該收集管具有一流體通道,該收集管另具有連通該流體通道之一水相流體入口及一混合流體出口;數個延伸管,各該延伸管形成一油相流體出口,該數個延伸管伸入該收集管之流體通道,各該油相流體出口位於該收集管之流體通道中,且位於該水相流體入口及該混合流體出口之間;及一反應器,該反應器的內部具有一反應腔,該反應腔連通該收集管之混合流體出口,該反應器具有一混拌件,該混拌件容置於該反應腔中,該反應器具有連通該反應腔之一微粒收集口。1‧‧‧收集管11‧‧‧流體通道12‧‧‧水相流體入口13‧‧‧混合流體出口14‧‧‧加熱模組2‧‧‧流體噴頭21‧‧‧油相流體通道22‧‧‧延伸管221‧‧‧油相流體出口23‧‧‧超音波產生件3‧‧‧反應器31‧‧‧反應腔32‧‧‧待反應流體入口33‧‧‧微粒收集口34‧‧‧混拌件35‧‧‧旋轉軸D1‧‧‧流體流向D2‧‧‧延伸方向θ‧‧‧夾角
