The work aims to study the effects of microstructure surface with different morphologies on the wettability of metal surface. Firstly, the first-level and second-level microstructure models were established on the surface of metal materials, and then the formulas for evaluating parameters of different structure models were worked out. Finally, the relevant formulas of different morphologies were simulated by Matlab to draw 3D curves of surface wetting characteristics of different morphologies. In first-level microstructure, the apparent contact angle θ on spherical structure was constant, θc=74.443° in complete wetting state and θw=131.720° in incomplete wetting state. For remaining microstructure models, smooth three-dimensional curves could be obtained by Matlab simulation. The three-dimensional square-column array microstructure could be designed and fabricated on the copper-based surface to obtain super-hydrophobic characteristics. In secondary microstructure, compared with relatively complete wetting state, incomplete wetting roughness factor f was far less than Υ completely. The roughness factor f was almost close to zero in the incomplete wetting state. Compared with the apparent contact angle results simulated by the complete wetting state, the three-dimensional array microstructure was most suitable for studying the effect of the metal surface microstructure on the apparent contact angle. Changing the microscopic morphology of the metal surface causes a change in the wetting property under the same simulation conditions. The wetting property of the metal surface has a mapping relationship with the surface microstructure and microstructure parameters, but the dimension of the surface microstructure is not as high as possible, and the first-level microstructure can also obtain the desired hydrophobic properties. When the external factors are the same, if the influence of the change of the microstructure parameters on the surface of the metal on the apparent contact angle is required to be studied, the effect of the three-dimensional array microstructure is the most suitable.