The design of a high voltage and high speed open three-phase asynchronous motor for refrigerators is briefly introduced. The product focuses on the breakthrough of high efficiency, energy saving, high power density, compact structure, low vibration, low noise and other motor design difficulties. The main performance parameters of the motor (efficiency, power factor, starting current, temperature rise, noise, vibration, etc.) are comprehensively considered. Electromagnetic and insulation designs are optimized by using thinned insulation measures and introducing trapezoidal coil design.On the premise of the reliability of the product, improvement of the structural design is realized by optimizing the wind path and reducing the mechanical consumption and noise.The test data of the product verify the technological advancement.