Abstract: Using Demeiya 1st as test materials, the test studied the effect of 3 kinds of nitrogen fertilizer on growth Zea mays. The results showed that chlorophyll, dry matter accumulation volume reached the highest value in the cell enzyme activators release state urea treatment, and were significantly higher than that of control by 72.96%, 55.33% , respectively, in ripe stage. Chlorophyll, dry matter accumulation volume of slow-release urea treatment were lower than that of cell enzyme activators release state urea treatment by 17.54%, 6.66%, respectively. Agronomic and economic traits of Z. mays treated by cell enzyme activators release state urea were significantly better than those treated by control, common urea and slow-release urea. Comprehensive analysis showed that cell enzyme activators release state urea promote the growth of Z. mays best.