Abstract:The automation design program of a spatial cable glass bridge with the wind cable is developed by the segmental catenary theory. A C/C++/C# language is used to carry out the secondary development for AutoCAD through ObjectARX Technique. Combined with the actual engineering cases, Midas Civil is used to verify the program result. The result is very consistent. With the future of engineering design industry gradually toward intelligent, this attempt can provide the different development experience for the engineering design of this field.