Abstract: Taking the male flowers of Jizhaomian Walnut as research objects,multiple physical and chemical indicators were selected to compare the nutritional components at different growth stages. The results showed that the water content of the younger walnut male flowers was about 85.23%,and the water content of naturally falling walnut male flowers was only 27.50%. With the decreasing of water content,the content of crude fat increased from 0.78% to 2.66% relatively. The total sugar content of the naturally falling walnut male flowers was about 9.52 g/100 g,which was 14.36 g/100 g measured by the young walnut male flowers. The crude protein content was relatively high at each growth stage and relatively stable between about 14% and 18%. With the decrease of water content,some soluble substances were lost,and the soluble sugar decreased from 3220.00 mg/100 g to 1326.67 mg/100 g. The mineral content of naturally falling walnut male flowers reached 13.33 mg/100 g,and the Zn element reached 6.55 mg/100 g. On the whole,the nutrient content of the walnut male flowers at the half-maturity stage and the mature stage was relatively close,but the gap with the naturally falling walnut male flowers was more significant. For better taste and nutrition,It is recommended that the mature male walnut flower be used as food or for subsequent processing,the semi-mature walnut male flowers can be used to extract abundant flavonoids. The walnut male flowers at the drop stage also have rich protein,which can be used as feed ingredients for development and utilization.