Abstract: The integration of Fluent based on Patran is widely used in ship mechanics computations and fluid-solid coupling analysis. However, the method to transform the models from Patran to Fluent is critical during the inte gration of the two. Considering the geometric model features of both Patran and Fluent,the details of transform process are described and the application examples are presented. The validation examples show that the di scussed method can quickly and efficiently extract the model information from Patran and then convert them into the format of Fluent. At the end, the advantages and disadvantages of the method are discussed and future applications in the integration of the CAD / CAE software are previewed.