Abstract: Effects of HLW (Huoliwang),a new compound nutriments playing a role of adjustment and control, on the leaf structure and function after wheat blossom show that HLW sprinkled on leaves during boot stage of wheat can improve effectively the leaves' structure and function. The area of flag leaf is expanded by 3.2％, however, the areas of the second and third leaves are reduced by 1.8％～7.1％；chlorophyll content of flag leaf increases by 19.17％,the protein content increases by 51.7％and photosynthetic rate increases by 75.79％.In a word,the techniques improve the metabolism vitality and retard the progress of leaf senescence.