Abstract: By setting up 8 treatments of nitrogen （CK）, comnlon urea （U）, hunfic acid urea （HI, H2, H3, H4, H5）, and 10% （H3-10%） reduction of humic acid urea, the effect of humic acid adeled urea on increasing yield and reducing nitrogen input in corn production than ordinary urea was explored. The results are as tollows： the amount of nitrogen accumulation in ditterent organs and the nitrogen uptake per plant increased by 5 types of humic acid urea compared with conventional urea, and the nitrogen uptake per unit area increased by 4.16%-16.90%. The nitrogen distribution in the stem, leaf and other organs increased except the grain nitrogen distribution. The number of grain per spike and 100 grain weight of the 5 models of humic acid urea increased, the yield increased by 6.72%-12.89% , the utilization effociency of nitrogen tertilizer increased, and the total nitrogen content of soil decreased by 10.81%-17.66% after harvest. The amount of nitrogen accumulation in ditterent organs and the nitrogen absorpotion per plant increased, the nitrogen uptake per unit area increased by 27.70%, the grain and leaf nitrogen distribution decreased, and the nitrogen distribution in the stem and other organs increased, and the number of grains per spike and 100 grain weight was increased by humic acid （H3） urea reduction by 10%, yield increased by 14.32% compared with conventional urea, nitrogen use efficiency increased, and total nitrogen content decreased by 18.72% after harvest.