The field experiment was carried out to study effect of applying different mixing ratio of the sulfur plus Resin-coated urea on maize.The results indicated that the optimum ratio was 50% PCU + 50% PU.The yield with 50%PCU + 50%PU treatment was the highest compared with the other treatments,which increased by 391kg/ha(3.5%) to 1535kg/ha(15.3%),and whose utilization rate for N was the highest(44.5%).