Online teaching platforms and technologies have become important means of offline teaching. The two teaching scenarios should be fully integrated and collaborate to complete teaching tasks. Following the concept of collaborative teaching and the integration of teaching elements by Josh Bersin, this paper reconstructs and designs course teaching content through four stages: learner demand feature recognition, learning plan formulation, learning resource development, and learning plan execution. Three integration methods, including flipping, flexibility, and complementary classrooms, are introduced to complete teaching practice. The assessment results of final close-book paper test and the satisfaction evaluation of integrated teaching give affirmation to the teaching effectiveness. Therefore, it can be considered that teachers should choose different dual line integrated teaching models based on the differences in course content to drive learning pace and improve classroom teaching efficiency.