Principle and application of the brazing were briefly introduced in this paper with summing up the brazing method used in the high-speed train manufacturing process. Then the various system components connection form of braze welding joints were analysis.The commonly used types and selection principle of brazing were introduced in the article. The brazing technology problems were discussed in high-speed train manufacturing. At last the article put forward the development direction of brazing technology in highspeed trains according to the domestic current situation of the high-speed train manufacturing enterprises and the research progress of brazing technology. The paper could provide the reference for safe and stable operation of the high-speed train and the development of the corresponding welding industry.