Micro-morphological characteristics of leaf epdermis for Ilex kudingcha and its six relative species were examined with an optical microscope and SEM.（1） Micro-morphological structure of leaf epidermis for seven Ilex species as Kudingcha tea had a certain similarity such as the stomata at lower epidermis.According to the size of stomata,it could be divided into two typies of stomata:large stomata and common stomata.Most of stomatal type were cyclocytic. （2）There also had some differences in leaf epidermis characteristics,such as leaf epidermal cells and stomata anticlinal walls form,the outer edge of the cuticle ornamentation of stomata,etc.（3）There was a big difference in leaf epidermal morphology between I.huoshanensis and I.centrochinensis.（4）Combined with the evidence of molecular biology and the characteristics of the leaf epidermis,intermediate types should be treated as varieties of I.pentagona.The results proved that the characteristic of leaf epidermis of Ilex L.have taxonomic significance,it could be used as reliable evidence in distinguishing Ilex kudingcha with its related species.