The micromorphology of leaf epidermal surfaces of 29 species of Vicia L. from China were 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. All stomata are anomocytic. Tow 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 platelet-like and flake-like wax. Some systematic significance of these epidermal features were discussed.