Abstract:The surface of leaves was studied by SEM in the following four Limonium species: Limonium gmelinii (Willd.) Kuntze, Limonium otolepis (Schrenk) Kuntze, Limonium myrianthum (Schrenk) Kuntze and Limonium auream, Inorder to research the relationships between the microstructure of plants and environment. The result shows that each of these four plants has a distributing of salt gland in their upper and lower epidermis of leaf，Most of them are consisted of 20 cells, and 4 out of 20 respectively has a small hole on the center of cuticle. The salt release of plant relies on the salt-secreting holes of salt gland. However, each of the four species has a difference in the density, the size and the position of the salt gland. During the long-time adaptation to the special habitat of saline-alkali, and this enables a plant to differentiate strongly into salt-secreting structure, Therefore, it is obvious significance in ecological adaptation.