Abstract: Tea leaf is of the functions of clearing the mind,resolving phlegm,promoting digestion,promoting urination,removing toxins,etc.and can be used to treat headache,blurred vision,drowsiness,vexation,indigestion,malaria,dysentery,etc.Its main component polyphenols can not only prevent aging and cardiovascular diseases,but can also induce the apoptosis and decomposition of tumor cells and prevent aberration and cancer metastasis.Therefore,We believe that it is necessary to carry out further studies on the effect of tea polyphenols in inhibiting tumor.