Abstract:Leaf anatomic structure of Pueraria lobata (Willd.) Ohwi (Leguminosae) was observed under light and scanning electron microscopes. The results showed that both adaxial and abaxial epidermis only consist of one layer of cell. The adaxial epidermis was thicker than abaxial epidermis. There are glandular and nonglandular trichomes on both epidermis. The stomata were mainly distributed on abaxial surface with density of (261±17) mm-2, compared to (6±3) mm-2 on the adaxial epidermis. The mesophyll consist of two layers of palisade parenchyma cell and one layer of spongy parenchyma cell, both are rich in chloroplasts. There was one layer of parenchyma cell exit between palisade tissue and spongy parenchyma tissue. Many calcium oxalate crystals distributed in venation. The morphological characteristics of Pueraria lobata leaves were helpful to adapt to heliophytic and xerophytic environment.