The surface morphology of the membranous wing of the oriental mole cricket ( Gryllotalpa orientalis Burmeister) was examined by scanning electron microscopy (SEM). The contact angles of water on the membranous wing surface of the oriental mole cricket were determined with an interface tension/wetting-angle measuring instrument ( model OCA20) . The relationship between wettability of the membranous wing surface of the oriental mole cricket with geometrical structure of its membranous wing surface was analyzed. The results showed the difference of each part of the membranous wing surface in the geometrical structure. The average apparent contact angles of water on the membranous wing surface of the oriental mole cricket was from 94. 4° to 118. 6°, indicating a hydrophobic ability. The comprehensive action of the geometrically structural surface and the hydrophobic function was the dominant mechanism of preventing adhesion of soil and water from their membranous wing surface. This research established the theoretical foundation on exploring all kinds of membranous wings and improving the waterproofness of green thin film.%利用扫描电镜分析了东方蝼蛄膜翅的表面形态.在OCA20型接触角测量仪上测量了水与东方蝼蛄膜翅展开表面各部位的接触角,分析了东方蝼蛄膜翅表面几何微结构与润湿性的关系.研究表明,东方蝼蛄膜翅展开后各部位的几何微结构各不相同,水与东方蝼蛄膜翅展开表面各部位的接触角平均值为94.4°～118.6°,表现出疏水性能.东方蝼蛄膜翅表面几何微结构与疏水性能的综合作用是其折叠后表面不沾土壤和水的重要机理.
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