The differences between diversified practice teaching methods and the regular teaching mode are discussed in the paper. In view of the shortcomings of the current traditional teaching mode in the cultivation of innovative professional talents, the two courses of《thermal equipment principle》and《heat exchanger principle and design》are taken as examples based on the energy and power engineering. Diversified practice should be strengthen during the course teaching process, including multimedia courseware design, engineering case analysis, off-campus engineers entering the classroom, experiment, actual engineering design and practice on project site. The teaching content allows students to carry out in-depth and comprehensive learning from basic knowledge, case application, experimental phenomena and results analysis, engineering field practice, etc. Diversified practice can improve students' interest in learning and comprehensive practical ability, and also cultivate outstanding engineers who can meet the needs of society.