The present invention provides a method for producing purified platelets from a megakaryocyte culture, said method including a first centrifugation step in which the culture is centrifuged at a centrifugal force of 150×g to 550×g, and a second centrifugation step in which a liquid component collected in the first centrifugation step is centrifuged at a centrifugal force of 600×g to 4,000×g.