Abstract: Fertilizer enhancer is mainly composed of medium and trace elements necessary for crops, urease inhibitor, ammonia stabilizer, biological bacteria agent, insecticide and plant production promoter. The use of fertilizer synergists can not only reduce the amount of nutrient loss, promote the continuous absorption of nutrients by crops, improve the overall fertilizer utilization rate, but also simplify the fertilization method and reduce the cost of fertilization. In order to verify the application effect of fertilizer enhancer,Huidong County Institute of Agricultural Science and Technology carried out a field plot experiment of urea of fertilizer enhancer on rice to evaluate the effect of fertilizer enhancer on increasing rice yield and income, saving fertilizer and labor and improving nitrogen utilization rate.