In view of the problems and deficiencies in the theoretical teaching of "electromagnetic field", this paper reconstructs the teaching contents accroding to actual engineering projects and proposes the blended teaching mode in the golden course construction of "electromagnetic field". The blended teaching is carried out based on the internet teaching platform MOOC + Duifene and face‐to‐face classroom, which emphasizes the dominant position of students and student‐teacher interaction to establish the learning mode under the teachers' guidance. The results show that the blended teaching mode can cultivate students' study initiative and enthusiasm and improve their academic achievements, the problem consciousness, critical thinking and innovation ability.