The work aims to explore the interaction method of enhancing the online design education experience under the background of "Internet and education". By analyzing the learning mode under the guidance of constructivism learning theory, the significance of intervening in online design education was discussed. Combined with the teaching characteristics of design discipline, the problems and needs of user interaction behavior in online design teaching were investigated. An interaction method model of online design education was constructed focusing on students from four aspects:context, collaboration, conversation and meaning construction. The interaction design process of online design education under the constructivism learning theory was summarized. Combined with the practical research of the online design education platform, some specific interaction design methods were put forward, such as improving the creation of classroom situation, enhancing the effect of classroom guidance, promoting the collaborative communication, optimizing the online atmosphere, and assisting the design and elaboration training. Based on the constructivism learning theory, optimizing the interaction method of online design education can better enhance the user's teaching and learning experience and help users complete their own meaning construction.