Abstract: Upon summarizing the computational theories and mathematical models of transfer impedance in braided shielded cables, this study explored the specific effects of braiding parameters on transfer impedance. It provided the changing patterns between braiding angle, number of braiding bobbins, and braiding area with transfer impedance. In order to apply theory to practical engineering and validate the accuracy of theoretical analysis, electromagnetic field simulation technology was employed for performance analysis of braided shielded cables. Finally, to ensure the reliability of simulation results, a physical test on braided shielded cables was conducted using the absorption clamp testing method. The test outcomes confirmed the accuracy and effectiveness of the simulation analysis, thus providing a certain scientific basis and practical guidance for the design of braided shielded cables.