The significance,description parameters,evaluation method,implement way and design for lightweight of automobile are comprehensively reviewed.The relationship among the performances of auto parts & components,the properties of materials and application of advanced technologies is also elaborated.According to recently related progress of lightweight and authors’ research and developing work,lightweight of automobile is comprehensively and systematically overviewed. The significance, description parameters, evaluation method, implement way and design for lightweight of automobile are comprehensively reviewed. The relationship among the performances of auto parts & components, the properties of materials and application of advanced technologies is also elaborated. According to recently related progress of lightweight and authors’ research and developing work, lightweight of automobile is comprehensively and systematically overviewed.