Rare earth is heavy metal element, with broad-spectrum biological toxicity and low dose accumulation poison effect. The quality issue of rare earth in agricultural products has received much attention, lately. There is a lot of discussions and controversies on the high content of rare earth in tea. Basing on the results of published literature, this paper mainly focuses on the following issues:(1)The effect of constant rare earth intake from tea on human health and its accumulation in human body. (2) It is necessary to set standard on the use of rare earth in agricultural products, that is' limit on the use of rare earth in plant food (GB 13107-1991). This is not only the need of international liability, but also the request to guarantee the safely of agricultural products. (3)The main reason of high rare earth content in tea is the use of rare earth fertilizer, especially rare earth leaf fertilizer. Tee tree can highly selectively absorb rare earth and convert it to its own component due to its special biological characteristics. This may account for the high content of rare earth in tea and soil. The content of rare earth in tea is the combination of the innate and exogenous rare earth in the soil. Secondly, there is a huge difference between rare earth products and plant growth regulator. It is a big mistake to use rare earth products on agricultural products. (4) The key to solve the high content of rare earth in tea is to completely eradicate the use of rare earth fertilizer in tea production. It is good for both the soil and tee tree to cut off the source of rare earth.