The purposes of this study were to discuss the effects of domain knowledge upon student technological creativity through design activities in a web-based synchronous environment. Those main research tasks included: 1. developing TRIZ design instruction activities in a web-based synchronous environment; 2. discussing the effects of domain knowledge upon process of student technological creativity through experiments; 3. discussing the effects of domain knowledge upon products of student technological creativity through experiments. Based on findings, recommendations of future study were proposed as well.