The micromorphology of leaf epidermal surfaces of 29 Vicia L.species from China was observed by using light microscope and scanning electron microscope.Both the adaxial and abaxial epidermal cells are polygonal or irregular in shape,with anticlinal walls undulate or straight and arched.Most species are amphistomatic,with some others hypostomatic or hyperstomatic.The stomata type is anomocytic in all observed species.Two kinds of trichomes could be distinguished,non-glandular and glandular,and most species have both kinds.The cuticular wax ornamentation are smooth,striation or granular striation,or with scale-like and flake-like wax.The systematic significance of these epidermal features was discussed.