Abstract: Through studied on eight peanut Cultivar’s production of dry materials,the result shoued: The high yield peanut cultivars had higher total yield and economic coefficient .It was biggest that the production of peanut dry material influence on the economic yield at after full bloom. The proportion of average of dry materials to the total dry material reached 68.84% from full bloom to ripe; The average of economic coefficient reached 0.57.The high yield peanut cultivars had higher accumulation rate of dry materials in after life.