In response to the current situation of multiple computer major courses with strong correlation being mutually indepen‐ dent and lacking comprehensive application in teaching, this article proposes an iterative teaching model of multi-course fusion proj‐ ect. The teaching of multiple courses revolves around the same large project, breaks down the large project into a series of iterative teaching tasks from easy to difficult, adopts an online and offline hybrid teaching method, and introduces the popular TAPD research and development platform in the industry as teaching assistance. Take the integration teaching of JAVA Program Design and Data‐ base Principles and Applications for example, this article introduces the teaching design and specific implementation process of this model in detail.