Nitrogen inhibitors have the advantages of increasing crop yield and nitrogen fertilizer utilization efficiency,and reducing nitrogen application costs and environmental pollution risks,providing a technological pathway for the green and efficient development of modern agriculture.They mainly included nitrification inhibitors and urease inhibitors.This article summarized the research and development history,mechanism of action,and application effects of nitrification inhibitors and urease inhibitors,and prospected their future research directions,in order to provide reference for the development and utilization of nitrogen inhibitors.