Abstract: This article researched on 16 common elements in the four growing phases of fresh tea leaves. It showed that contents of 9 elements,i.e. Ca,Mn,Al,Fe,Cr,Pb,Sn,As and Sb,gradually increased with the growing of tea bushes and the bio-accumulation appeared;of which,the changes of elements Al and Sb were comparatively distinct. Content of K,Mg,Na,Zn,Cu and Cd elements decreased with the growing of tea bushes. Elements Zn and Cd were relatively distinct concerning the transfer and reutilization from mature leaves to tender leaves. The analysis on the infusing rules of 16 elements provided the reference for tea production and daily consumption.

Key words: tea, element, dynamic changes