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The surface morphologies of the pronotum, abdomen, proala, membranous wing and legs of the oriental mole cricket (Gryllotalpa orientalis Burmeister) were examined by scanning electron microscopy (SEM). The coverage density and size of seta of the oriental mole cricket were measured. The contact angles of water on the body surfaces of the oriental mole cricket were determined respectively with an interface tension/wetting-angle measuring instrument (OCA20 Model). Subsequently, the relationship of wettability of the body surfaces of the oriental mole cricket with geometrical structure of its body surface was studied. The results show that the coverage densities of the seta on pronotum, proala, abdomen, legs and membranous wing of the oriental mole cricket are 40.32％, 31.82％, 23.89％, 19.11％ and 14.17％ respectively. The average apparent contact angles of water on the surface of the oriental mole cricket are from 110.8° to 141.5°. The strong hydrophobic ability of the oriental mole cricket is appeared. The comprehensive action of the geometrically structural surface formed by seta and their hydrophobic function is the dominant mechanism of preventing adhesion of soil and water from their body surface.