Textbooks and teaching methods are important parts of the education reformand play an important role in the cultivationof students' ability.Taking the course Electrical Technology and Application as an example, this paper studies the development of anew form of loose-leaf teaching material based on the excellent online open course and the combination of online and offline teach-ing.In order to stimulate the interest of students, guide the independent learning, comprehensively improve the learning ability of stu-dents, strengthen the practical ability and innovative thinking, and cultivate high-quality workers and skilled personnel with moraland technical skills.