Abstract: The availability of zinc is different in different conditions of soil. In order to further grasp the rate of zinc fertilizer, the experiment was carried out by different rate of zinc fertilizer on corn field. The results showed that ：corn yield increased significantly after applying zinc fertilizer;production efficiency increased 75.1 kg after increasing zinc fertilizer application 1 kg/667m^2;the input-output ratio was 32：1, which was higher than the zinc fertilizer application 2 kg/667m^2 ;the zinc fertilizer cost is low and easy to use,so we should increase zinc fertilizer application reasonably for zinc deficiency area.