The automobile industry is facing more and more severe environmental and energy challenges, urging the major automobile enterprises to invest more capital and technology in new energy vehicles. The drive motor is one of the core components of new energy vehicle. The motor works in high temperature and vibration environment with high power density. Therefore, the design of motor structure is related to strength, vibration and noise, durability, etc. The structural characteristics and the design and development process of a drive motor are described. The static strength of the motor shell under different working conditions of the whole vehicle, the stress on the shell under sweep-frequency vibration and random vibration conditions, and the modes of the whole motor are analyzed by CAE simulation. Through the special vibration test of the drive motor, it is proved that its structural strength and modes meet the design objectives.