d rare earth can increase tea yield and quality,but the effects of spraying rare earth on the contents and compositions of rare earth elements(REE) in tea are unknown.The contents and compositions of REE in teas from tea garden sprayed "Cheng Lu" rare earth,cont.300mg/kg and 750kg/ha,and from natural tea garden have been determined.The results show that the longer the interval between spraying and picking was,the less the effects of sprayed rare earth on contents and compositions of REE in the teas were.About 80% ΣREE in tea whether it came from spraying or no spraying the rare earth were insoluble in its infusion.There were about 10% the soluble REE in infusion,in particular La,Ce and Nd,participating in coordinating polysaccharide,the amount of REE which participated in forming polysaccharide 15 days after spraying the rare earth was larger than those of 25 days an