By using the famous and precious green tea(as material which) made of one bud and one leaf in Spring in the improved variety tea plant of Chenzhou of Hunan Province,and choosing the keeping fresh agents with the function of absorbing the water and getting rid of the oxygen,three months of damaged storing experiments aim at screening the high efficient keeping fresh agents for the tea.The effect of the keeping fresh agents are analyzed from the four aspects of organoleptic quality,biochemical component,physical character and catechins,which reveals that the fragrance,infusion colour,taste,brigh...