The experiment was conducted to investigate the inhibiting effect of Maize pollen.Polysacchrides of maize pollen(PPM) and Maize spores'.Mice were used as the test animal with drench method.The result of drench method shows that polysacchrides of Maize pollen inhibiting effect was the best,the next is Maize spores'.and the Maize pollen is at the lowest level.