|The present disclosure provides a system for collecting amyloid including a reaction tank, at least one nano-micro magnetic stir bar, a rotating magnetic field supply device and a driving device. The reaction tank includes a plurality of phagocytes. The rotating magnetic field supply device is used to provide a rotating magnetic field to the reaction tank. When the rotating magnetic field supply device is driven by the driving device and provides the rotating magnetic field to the reaction tank, the nano-micro magnetic stir bar will be driven by the rotating magnetic field so as to rotate in the reaction tank, and a micro-whirlpool flow of a sample in the reaction tank will be generated corresponding to the rotation of the nano-micro magnetic stir bar. Thus, the amyloid will be gathered and captured by the phagocytes later. Therefore, the system for collecting amyloid of the present disclosure can gently remove and metabolite the amyloid by the phagocytes without destroying the sample and can have potential to apply in the relevant market.