It mainly focuses on the reform and research of the teaching content and methods of laserprinciples ,and puts forward the “ teaching method of laser principles in English led by introducing cross-scientific research information". Through adding information cross interaction , it is possible to fully mobilize students’ learning enthusiasm,and establish interactive teaching modeSo as to enhance the teaching level ofteachers ,stimulate students’interest in learning ,and significantly enhance students’problem-solving ability inengineering practice.