We had an open lecture of Tag rugby to introduce for primary school children, their parents and school teachers. Before this open lecture, we visited primary schools, and advertised this lecture. And, 15 primary school children, 8 parents and 3 primary school teachers participated. We lectured to them about basic Tag rugby rules and game method with Sendai National College of Technology Rugby Football Club member's support. According to results of the participants' questionnaire, it was a popular lecture. We thought this open lecture was effective to continue and was suitable for regional contribution of college's club activities.