The purpose of this study is to develop an instructional design model and explore program components for blended learning-based extracurriculum and course operation in university education. For this purpose, the concepts of extracurriculum in blended learning and university education were analyzed, and case analysis related to extracurricular activities was conducted. In addition, this study employed 2 instructional designers and 3 extracurricular education practice experts (a total of 5 experts) to conduct 3 rounds delphi technique. Three rounds of Delphi technique have led to the development of an instructional design model in the blended learning-based extracurriculum. This study includes expert validation for finalizing the version of the developed model. The results of this study are expected to minimize confusion for extracurriculum operation in the post-corona era and to provide meaningful guidelines for the development of systematic and diverse extracurriculum, and progress to the university’s extracurriculum operation departments.