This paper systematically explores material selection，electromagnetic design optimization，and control strategy innovation for drive motors. It analyzes the application potential of high-permeability alloys and high-temperature resistant insulating materials， studies the suppression mechanism of electromagnetic interference through multiphysics coupling design，and explores dynamic efficiency optimization paths based on intelligent algorithms. The aim is to build a performance improvement system covering the entire lifecycle from design，manufacturing，to operation and maintenance，providing theoretical support and practical guidance for technological breakthroughs in the power systems of new energy vehicles.