Abstract: Here in the article is presented a canting-pull pipe bridge analytical modle much closer to actual engineering, for which the reset method an effective optimum one, is adopted, leading to a successful solution of optimization design of the canting-pul1 cable bridge with more than one non-linear binding conditions. The comparsion between the optimum project and the orignal one in regard to technical and econonmical quota proves that the former is better in efficiency. Also presented here is the special computer programme (ODCPB), which not only provides a proper project for the structure of a canting-pull pipe bridge, but also lays the basis for computer assisted design of canting-pull cable bridges.