Abstract: Due to many merits and traits，the bus bar has been widely used in the electrical and electronic industry．With the application development in many fields，the requirement for high quality，multi-function bus bar is urgent．Based on the recent research achievements both at home and abroad，advanced design methods of the bus bar are proposed including suppression of EMI，improvement of electrical performance and control of temperature rise．How to enhance the reliability and minimize the contact resistance of the bus bar in engineering application is also explained in detail．