The work aims to discuss the application of SAPAD and scenario thinking in interactive product design based on the importance of behavior and scenario in interaction design, so as to explore new interactive product design methods and carry out related practice. The specific application scenario of the product was determined through opportunity insight. The objective scenario was restored by questionnaires and user interviews and an experiment of behavior observation was carried out. The mapping of behavior-object-meaning was completed by the SAPAD framework and the functional modules and the core meaning clusters were obtained through the method of cluster analysis. The mapping of the core meaning clusters-functional modules was completed and new functional modules were reconstructed and formed and then the interactive product design was completed in target conceptual scenario. Finally, the interactive product was evaluated and improved in the application scenario. With the scenario of international students recording and sorting out notes of online learning at home as an example, the innovative design and evaluation of interactive product was carried out combined with SAPAD and scenario thinking and the feasibility and effectiveness of this method were proved. The design method of interactive product based on SAPAD and scenario thinking can obtain objective and true user needs more comprehensively, emphasize the importance of behavior and scenario in interactive design and provide new ideas for interactive product design.