The invention provides a multi-impact powder clogging releasing device including a controller (150), at least one arch breaking mechanism (100) and a hydraulic device (12). The controller (150) is connected to each of the arch breaking mechanisms (100) by means of the hydraulic device (12), the controller (150) controls the operation of each of the arch breaking mechanisms (100) through the hydraulic device (12), so that the arch breaking mechanisms (100) enters into a storage chamber to hit the arches formed in the storage chamber while moving forward. When the arch breaking mechanisms (100) are retracted, the outer wall of the storage compartment is caused to vibrate. Advantageously, the present invention can break the arches formed by the adhesion and agglomeration between the powder inside the storage chamber in the shortest time. The releasing device has the advantages of preveting arch generation in advance.