Cross-school credit course is a new online and offline mixed cross-school joint teaching mode based on the construction and sharing of high-quality teaching resources. This model relies on the Internet and modern information technology to realize the co-construction and sharing of teaching resources and promote the reform of teaching mode, teaching method and assessment method. This paper takes stimulating students' initiative and enthusiasm as the breakthrough point, With the goal of improving teaching effect, Based on BOPPPS model, the teaching process of diversified communication course is divided into six stages: introduction, learning objectives, pre-class mapping, participatory learning, after-class test and summary. The teaching activities of project-oriented teaching (PBL) + team learning (TBL) are carried out by using the cross-school reading platform, and the data of students' learning behavior are collected to complete formative evaluation.